BIOMARIN PHARMACEUTICAL INC. (a Delaware corporation)

Exhibit 1.1

BIOMARIN PHARMACEUTICAL INC.

(a Delaware corporation)

1.875% Senior Subordinated Convertible Notes due 2017

PURCHASE AGREEMENT

Dated: April 17, 2007

BIOMARIN PHARMACEUTICAL INC.

(a Delaware Corporation)

$282,500,000

1.875% Senior Subordinated Convertible Notes due 2017

PURCHASE AGREEMENT

April 17, 2007

▇▇▇▇▇▇▇ ▇▇▇▇▇ & CO.

▇▇▇▇▇▇▇ ▇▇▇▇▇, ▇▇▇▇▇▇, ▇▇▇▇▇▇ & ▇▇▇▇▇

Incorporated

4 World Financial Center

New York, New York 10080

Ladies and Gentlemen:

BioMarin Pharmaceutical Inc., a Delaware corporation (the “Company”), confirms its agreement with ▇▇▇▇▇▇▇ ▇▇▇▇▇ & Co., ▇▇▇▇▇▇▇ Lynch, Pierce, ▇▇▇▇▇▇ & ▇▇▇▇▇ Incorporated (“▇▇▇▇▇▇▇ ▇▇▇▇▇” or the “Underwriter”), with respect to (i) the sale by the Company and the purchase by the Underwriter of $282,500,000 aggregate principal amount of the Company’s 1.875% Senior Subordinated Convertible Notes due 2017 (the “Notes”), and (ii) the grant by the Company to the Underwriter of the option described in Section 2(b) hereof to purchase all or any part of an additional $42,375,000 aggregate principal amount of the Notes to cover overallotments, if any. The aforesaid $282,500,000 aggregate principal amount of the Notes (the “Initial Securities”) to be purchased by the Underwriter and all or any part of the $42,375,000 aggregate principal amount of the Notes subject to the option described in Section 2(b) hereof (the “Option Securities”) are hereinafter called, collectively, the “Securities.” The Securities are to be issued pursuant to the second supplemental indenture dated as of the Closing Time (as defined in Section 2(c)) to the indenture dated as of March 29, 2006 (the indenture as so supplemented, the “Indenture”) between the Company and Wilmington Trust Company, as trustee (the “Trustee”). Securities issued in book-entry form will be issued to Cede & Co. as nominee of The Depository Trust Company (“DTC”) pursuant to a letter of representations (the “DTC Agreement”), between the Company and DTC.

The Securities are convertible into shares of common stock, par value $0.001 per share (the “Common Stock”), of the Company (the “Underlying Common Stock”) in accordance with the terms of the Securities and the Indenture, at the initial conversion price specified in Schedule B hereto.

The Company understands that the Underwriter proposes to make a public offering of the Securities as soon as the Underwriter deems advisable after this Agreement has been executed and delivered. The Indenture has been qualified under the Trust Indenture Act of 1939, as amended (the “1939 Act”).

The Company has filed with the Securities and Exchange Commission (the “Commission”) an automatic shelf registration statement on Form S-3 (No. 333-132566), including the related preliminary prospectus or prospectuses, which registration statement became effective upon filing under Rule 462(e) of the rules and regulations of the Commission (the “Rules and Regulations”) under the Securities Act of 1933, as amended (the “Act”). Such registration statement covers the registration of the Securities under the Act. Promptly after execution and delivery of this Agreement, the Company will prepare and file a prospectus in accordance with the provisions of Rule 430B (“Rule 430B”) of the Rules and Regulations and paragraph (b) of Rule 424 (“Rule 424(b)”) of the Rules and Regulations. Any information included in such prospectus that was omitted from such registration statement at the time it became effective but that is deemed to be part of and included in such registration statement pursuant to Rule 430B is referred to as “Rule 430B Information.” Each prospectus used in connection with the offering of the Securities that omitted Rule 430B Information, is herein called a “Preliminary Prospectus” and all references herein to any “Preliminary Prospectus” shall be deemed to include the Statutory Prospectus (as hereinafter defined). Such registration statement, at any given time, including the amendments thereto to such time, the exhibits and any schedules thereto at such time, the documents incorporated by reference therein pursuant to Item 12 of Form S-3 under the Act at such time and the documents otherwise deemed to be a part thereof or included therein by the Rules and Regulations, is herein called the “Registration Statement.” The Registration Statement at the time it originally became effective is herein called the “Original Registration Statement.” The final prospectus supplement in the form first furnished to the Underwriter for use in connection with the offering of the Securities, including the documents incorporated by reference therein pursuant to Item 12 of Form S-3 under the Act at the time of the execution of this Agreement and any Preliminary Prospectuses that form a part thereof, is herein called the “Prospectus.” For purposes of this Agreement, all references to the Registration Statement, any Preliminary Prospectus, the Statutory Prospectus, the Prospectus or any Issuer Free Writing Prospectus (as hereinafter defined) or any amendment or supplement to any of the foregoing shall be deemed to include the copy filed with the Commission pursuant to its Electronic Data Gathering, Analysis and Retrieval system (“▇▇▇▇▇”).

All references in this Agreement to financial statements and schedules and other information which is “contained,” “included” or “stated” in the Registration Statement, any Preliminary Prospectus, the Statutory Prospectus or the Prospectus (or other references of like import) shall be deemed to mean and include all such financial statements and schedules and other information which is incorporated by reference in or otherwise deemed by the Rules and Regulations to be a part of or included in the Registration Statement, any Preliminary Prospectus, the Statutory Prospectus or the Prospectus, as the case may be; and all references in this Agreement to amendments or supplements to the Registration Statement, any Preliminary Prospectus, the Statutory Prospectus or the Prospectus shall be deemed to mean and include the filing of any document under the Securities Exchange Act of 1934, as amended (the “Exchange Act”) which is incorporated by reference in or otherwise deemed by the Rules and Regulations to be a part of or included in the Registration Statement, any Preliminary Prospectus, the Statutory Prospectus or the Prospectus, as the case may be.

SECTION 1. Representations And Warranties.

(a) Representations and Warranties by the Company. The Company represents and warrants to the Underwriter as of the date hereof, the Applicable Time referred to in Section 1(a)(ii) hereof and as of the Closing Time referred to in Section 2(c) hereof, and as of each Date of Delivery (if any) referred to in Section 2(b) hereof, and agrees with the Underwriter, as follows:

(i) Status as a Well-Known Seasoned Issuer. (A) At the time of filing the initial Registration Statement, (B) at the time of the most recent amendment thereto for the purposes of complying with Section 10(a)(3) of the Act (whether such amendment was by post-effective amendment, incorporated report filed pursuant to Section 13 or 15(d) of the Exchange Act or form of prospectus), (C) at the time the Company or any person acting on its behalf (within the meaning, for this clause only, of Rule 163(c) of the Rules and Regulations) made any offer relating to the Securities in reliance on the exemption of Rule 163 of the Rules and Regulations and (D) at the date hereof, the Company was and is a “well-known seasoned issuer” as defined in Rule 405 of the Rules and Regulations (“Rule 405”), including not having been and not being an “ineligible issuer” as defined in Rule 405. The Registration Statement is an “automatic shelf registration statement,” as defined in Rule 405, and the Securities, since their registration on the Registration Statement, have been and remain eligible for registration by the Company on a Rule 405 “automatic shelf registration statement”. The Company has not received from the Commission any notice pursuant to Rule 401(g)(2) of the Rules and Regulations objecting to the use of the automatic shelf registration statement form.

At the time of filing the Original Registration Statement, at the earliest time thereafter that the Company or another offering participant made a bona fide offer (within the meaning of Rule 164(h)(2) of the Rules and Regulations) of the Securities and at the date hereof, the Company was not and is not an “ineligible issuer,” as defined in Rule 405, including the Company or any other subsidiary in the preceding three years not having been convicted of a felony or misdemeanor or having been made the subject of a judicial or administrative decree or order as described in Rule 405, without taking account of any determination by the Commission pursuant to Rule 405 that it is not necessary that the Company be considered an “ineligible issuer.”

(ii) Registration Statement, Prospectus and Disclosure at Time of Sale. The Original Registration Statement became effective upon filing under Rule 462(e) of the 1933 Act Regulations (“Rule 462(e)”) on March 20, 2006, and any post-effective amendment thereto also became effective upon filing under Rule 462(e). No stop order preventing or suspending the use of the Prospectus or suspending the effectiveness of the Registration Statement has been issued under the Act and no proceedings for that purpose have been instituted or are pending or, to the knowledge of the Company, are contemplated by the Commission, and any request received by the Company on the part of the Commission for additional information has been complied with.

Any offer that is a written communication relating to the Securities made prior to the filing of the Original Registration Statement by the Company or any person acting on its behalf (within the meaning, for this paragraph only, of Rule 163(c) of the Rules and Regulations) has been filed with the Commission in accordance with the exemption provided by Rule 163 of the Rules and Regulations (“Rule 163”) and otherwise complied with the requirements of Rule 163, including without limitation the legending requirement, to qualify such offer for the exemption from Section 5(c) of the Act provided by Rule 163.

At the respective times the Original Registration Statement and each amendment thereto became effective, at each deemed effective date with respect to the Underwriter pursuant to Rule 430B(f)(2) of the Rules and Regulations, at the Applicable Time and at the Closing Time (and, if any Option Securities are purchased, at the Date of Delivery), the Registration Statement complied and will comply in all material respects with the requirements of the Act and the Rules and Regulations, the Exchange Act and the rules and regulations of the Commission thereunder (the “Exchange Act Regulations”), and the 1939 Act and the rules and regulations of the Commission thereunder (the “Trust Indenture Regulations”) and did not and will not contain an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein not misleading.

Neither the Prospectus nor any amendment thereof or supplements thereto, at the time the Prospectus or any such amendment or supplement was issued and at the Closing Time (and, if any Option Securities are purchased, at the Date of Delivery) included or will include an untrue statement of a material fact or omitted or will omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading.

Each Preliminary Prospectus (including the prospectus or prospectuses filed as part of the Original Registration Statement or any amendment thereto) complied when so filed in all material respects with the Rules and Regulations and each Preliminary Prospectus and the Prospectus delivered to the Underwriter for use in connection with this offering was identical to the electronically transmitted copies thereof filed with the Commission pursuant to ▇▇▇▇▇, except to the extent permitted by Regulation S-T.

As of the Applicable Time (as defined below), neither (x) the Issuer General Use Free Writing Prospectus(es) (as defined below) issued at or prior to the Applicable Time and the Statutory Prospectus (as defined below), all considered together (collectively, the “General Disclosure Package”), nor (y) any individual Issuer Limited Use Free Writing Prospectus, when considered together with the General Disclosure Package, included any untrue statement of a material fact or omitted to state any material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading.

As of the time of the filing of the Final Term Sheet, the General Disclosure Package, when considered together with the Final Term Sheet (as defined in Section 3(b)), will not include any untrue statement of a material fact or omit to state any material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading.

As used in this subsection and elsewhere in this Agreement:

“Applicable Time” means 7:00 a.m. (Eastern time) on April 18, 2007 or such other time as agreed by the Company and ▇▇▇▇▇▇▇ ▇▇▇▇▇.

“Issuer Free Writing Prospectus” means any “issuer free writing prospectus,” as defined in Rule 433 of the Rules and Regulations (“Rule 433”), relating to the Securities that (i) is required to be filed with the Commission by the Company, (ii) is a “road show that is a written communication” within the meaning of Rule 433(d)(8)(i), whether or not required to be filed with the Commission or (iii) is exempt from filing pursuant to Rule 433(d)(5)(i) because it contains a description of the Securities or of the offering that does not reflect the final terms, in each case in the form filed or required to be filed with the Commission or, if not required to be filed, in the form retained in the Company’s records pursuant to Rule 433(g).

“Issuer General Use Free Writing Prospectus” means any Issuer Free Writing Prospectus that is intended for general distribution to prospective investors (other than a Bona Fide Electronic Road Show, as defined in Rule 433), as evidenced by its being specified in Schedule C hereto.

“Issuer Limited Use Free Writing Prospectus” means any Issuer Free Writing Prospectus that is not an Issuer General Use Free Writing Prospectus.

“Statutory Prospectus” means the prospectus, dated March 20, 2006, which was contained in the Original Registration Statement, and the preliminary prospectus supplement dated April 16, 2007 relating to the offering of the Securities, including the documents incorporated by reference therein pursuant to item 12 of Form S-3 under the 1933 Act, in the form first furnished to the Underwriter for use in connection with the offering of the Securities.

Each Issuer Free Writing Prospectus, as of its issue date and at all subsequent times through the completion of the public offer and sale of the Securities or until any earlier date that the issuer notified or notifies ▇▇▇▇▇▇▇ ▇▇▇▇▇ as described in Section 3(e), did not, does not and will not include any information that conflicted, conflicts or will conflict with the information contained in the Registration Statement or the Prospectus, including any document incorporated by reference therein and any preliminary or other prospectus deemed to be a part thereof that has not been superseded or modified.

The representations and warranties in this subsection 1(a)(ii) shall not apply to statements in or omissions from the Registration Statement, the Prospectus, the Statutory Prospectus, any Preliminary Prospectus or any Issuer Free Writing Prospectus made in reliance upon and in conformity with written information furnished to the Company by the Underwriter expressly for use therein.

(iii) Incorporated Documents. The documents incorporated or deemed to be incorporated by reference in the Registration Statement, the Preliminary Prospectus and the Prospectus, at the time they were or hereafter are filed with the Commission, complied and will comply in all material respects with the requirements of the Act and the Rules and Regulations and the Exchange Act and the Exchange Act Regulations, and, when read together with the other information (a) in the Prospectus at the time the Registration Statement became effective (including each deemed effective date with respect to the Underwriter pursuant to Rule 430(B)(f)(2) of the Rules and Regulations), (b) in the Preliminary Prospectus at the earlier of the time the Preliminary Prospectus was first used and the date and time of the first contract of sale of Securities in this offering, (c) in the Prospectus at the Closing Time (and if any Option Securities are purchased, at the Date of Delivery), did not and will not contain an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein not misleading.

(iv) Independent Accountants. KPMG LLP, which certified the financial statements and supporting schedules included in the Registration Statement or incorporated by reference in the Registration Statement, the General Disclosure Package or the Prospectus, is an independent public accountant as required by the Act and the Rules and Regulations and, to the knowledge of the Company, such accountants are not in violation of the auditor independence requirements of the ▇▇▇▇▇▇▇▇-▇▇▇▇▇ Act of 2002 and the rules and regulations promulgated thereunder (collectively, the “▇▇▇▇▇▇▇▇-▇▇▇▇▇ Act”).

(v) Financial Statements. The financial statements included or incorporated by reference in the Registration Statement, the General Disclosure Package and the Prospectus, together with the related schedules and notes, if any, included or incorporated by reference, present fairly the financial position of the Company and its consolidated subsidiaries at the dates indicated and the statement of operations, stockholders’ equity and cash flows of the Company and its consolidated subsidiaries for the periods specified; said financial statements have been prepared in conformity with generally accepted accounting principles (“GAAP”) applied on a consistent basis throughout the periods involved. The supporting schedules, if any, present fairly in accordance with GAAP the information required to be stated therein. The selected financial data and the summary financial information included or incorporated by reference in the General Disclosure Package and the Prospectus present fairly the information shown therein and have been compiled on a basis consistent with that of the audited financial statements included or incorporated by reference in the Registration Statement. No other financial statements or schedules are required to be included in the Registration Statement, the General Disclosure Package or the Prospectus. All disclosures contained in the Registration Statement, the General Disclosure Package or the Prospectus, or incorporated by reference therein, regarding “non-GAAP financial measures” (as such term is defined by the rules and regulations of the Commission) comply with Regulation G of the Exchange Act and Item 10 of Regulation S-K under the Act, to the extent applicable. Except as described in the Registration Statement, the General Disclosure Package or the Prospectus, there are no material off-balance sheet transactions, arrangements, obligations (including contingent obligations), or any other relationships

with unconsolidated entities or other persons, that may have a material current or future effect on the Company’s financial condition, changes in financial condition, results of operations, liquidity, capital expenditures, capital resources or significant components of revenue or expenses.

(vi) No Material Adverse Change in Business. Since the respective dates as of which information is given in the Registration Statement, the General Disclosure Package and the Prospectus, except as otherwise stated therein, (A) there has been no material adverse change, or any development that would be reasonably expected to result in a material adverse change, in the condition, financial or otherwise, or in the earnings, business affairs or business prospects of the Company and its subsidiaries taken as a whole, whether or not arising in the ordinary course of business (a “Material Adverse Effect”), (B) there have been no transactions entered into by the Company or any of its subsidiaries, other than those in the ordinary course of business, which are material with respect to the Company and its subsidiaries taken as a whole, and (C) there has been no dividend or distribution of any kind declared, paid or made by the Company on any class of its capital stock.

(vii) Good Standing of the Company. The Company has been duly organized and is validly existing as a corporation in good standing under the laws of the State of Delaware and has full corporate power and authority to own, lease and operate its properties and to conduct its business as described in the Prospectus and the General Disclosure Package, and to enter into and perform its obligations under this Agreement; and the Company is duly qualified as a foreign corporation to transact business and is in good standing in each other jurisdiction in which such qualification is required, whether by reason of the ownership or leasing of property or the conduct of business, except where the failure so to qualify or to be in good standing would not reasonably be expected to result in a Material Adverse Effect.

(viii) Good Standing of Subsidiaries. Each “significant subsidiary” of the Company (as such term is defined in Rule 1-02 of Regulation S-X) (each a “Subsidiary” and, collectively, the “Subsidiaries”) (A) that is a corporation has been duly organized and is validly existing as a corporation in good standing under the laws of the jurisdiction of its incorporation, has corporate power and authority to own, lease and operate its properties and to conduct its business as described in the Prospectus and the General Disclosure Package, and is duly qualified as a foreign corporation to transact business and is in good standing in each jurisdiction in which such qualification is required, whether by reason of the ownership or leasing of property or the conduct of business, and (B) that is a limited liability company has been duly formed and is validly existing as a limited liability company in good standing under the laws of the jurisdiction of its formation, has limited liability company power and authority to own, lease and operate its properties and to conduct its business as described in the Prospectus and the General Disclosure Package, and is duly qualified as a foreign limited liability company to transact business and is in good standing in each jurisdiction in which such qualification is required, whether by reason of the ownership or leasing of property or the conduct of business, except in each case under clause (A) or (B) where the failure so to qualify or to be in good standing would not reasonably be expected to result in a Material Adverse

Effect; except as otherwise disclosed in the Registration Statement and the General Disclosure Package, and the Prospectus, all of the issued and outstanding capital stock of each such Subsidiary has been duly authorized and validly issued, is fully paid and non-assessable and is owned by the Company, directly or through subsidiaries, free and clear of any security interest, mortgage, pledge, lien, encumbrance, claim or equity; none of the outstanding shares of capital stock of any Subsidiary was issued in violation of the preemptive or similar rights of any securityholder of such Subsidiary. The only subsidiaries of the Company are the subsidiaries listed on Exhibit 21.1 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2005.

(ix) Capitalization. The authorized capital stock of the Company consists of 150,000,000 shares of common stock, par value $0.001 per share (the “Common Stock”), and 1,000,000 shares of preferred stock, par value $0.001 per share, of which 113.676 shares have been designated as Series A Non-Voting Non-Convertible Preferred Stock and 750,000 shares have been designated as Series B Junior Participating Preferred Stock. After giving effect to the transactions contemplated by this Agreement, as of April 17, 2007:

The issued and outstanding capital stock of the Company will consist of 95,655,527 of common stock and 113.676 shares of Series A Non-Voting Non-Convertible Preferred Stock.

The Company will have (x) an aggregate of 10,199,209 shares of common stock reserved for issuance upon the exercise of outstanding options granted under the Company’s 1997 Stock Plan, the Company’s 1998 Director Option Plan and the Company’s Amended and Restated BioMarin Pharmaceutical Inc. 2006 Share Incentive Plan (collectively, the “Option Plans”), (y) 10,404,101 shares of Common Stock reserved for issuance upon conversion of its 2.5% Senior Subordinated Convertible Notes due 2013 and (z) 13,875,581 shares of Common Stock reserved for issuance upon conversion of its 1.875% Senior Subordinated Convertible Notes due 2017.

The Company will have 12,066,865 shares of common stock available for future grant under the Option Plans.

The Company will have 2,322,258 shares of common stock reserved for future purchase by employees of the Company under the Company’s Amended and Restated 2006 Employee Stock Purchase Plan (collectively, the Stock Purchase Plans”).

Since December 31, 2006, the Company has not issued or entered into any commitment to issue subscriptions, options, warrants, convertible or exchangeable securities or other contracts or rights to purchase any shares of the capital stock of the Company or any of its subsidiaries (other than pursuant to the exercise of stock options and warrants to purchase Common Stock outstanding on December 31, 2006, pursuant to the Option Plans and pursuant to the Stock Purchase Plans).

All of the shares of issued and outstanding capital stock of the Company have been duly authorized and validly issued and are fully paid and non-assessable; none of the outstanding shares of capital stock of the Company was issued in violation of the preemptive or other similar rights of any securityholder of the Company.

(x) Authorization of Agreement. The Company has full corporate power and authority to (a) enter into this Agreement and to consummate the transactions contemplated under this Agreement, the Indenture, and the DTC Agreement, in each case to the extent a party thereto, and (b) authorize, execute, issue, and deliver the Securities as contemplated by this Agreement. This Agreement has been duly authorized, executed and delivered by the Company, and constitutes the legal and binding obligation of the Company, enforceable in accordance with its terms, except to the extent that rights to indemnity hereunder may be limited by federal or state securities laws and except as such enforceability may be limited by bankruptcy, fraudulent conveyance, insolvency, reorganization or similar laws affecting the rights of creditors generally and subject to general principles of equity.

(xi) Authorization of the Indenture. The Indenture has been duly authorized by the Company and duly qualified under the 1939 Act and, when duly executed and delivered by the Company and the Trustee, will constitute a valid and binding agreement of the Company, enforceable against the Company in accordance with its terms, except as the enforcement thereof may be limited by bankruptcy, insolvency (including, without limitation, all laws relating to fraudulent transfers), reorganization, moratorium or similar laws affecting enforcement of creditors’ rights generally and except as enforcement thereof is subject to general principles of equity (regardless of whether enforcement is considered in a proceeding in equity or at law).

(xii) Authorization of the Securities. The Securities have been duly authorized and, at the Closing Time, will have been duly executed by the Company and, when authenticated, issued and delivered in the manner provided for in the Indenture and delivered against payment of the purchase price therefor as provided in this Agreement, will constitute valid and binding obligations of the Company, enforceable against the Company in accordance with their terms, except as the enforcement thereof may be limited by bankruptcy, insolvency (including, without limitation, all laws relating to fraudulent transfers), reorganization, moratorium or similar laws affecting enforcement of creditors’ rights generally and except as enforcement thereof is subject to general principles of equity (regardless of whether enforcement is considered in a proceeding in equity or at law), and will be in the form contemplated by, and entitled to the benefits of, the Indenture.

(xiii) Description of the Securities and the Indenture. The Securities and the Indenture will conform in all material respects to the respective statements relating thereto contained in the Statutory Prospectus and the Prospectus and will be in substantially the respective forms filed or incorporated by reference, as the case may be, in the Registration Statement.

(xiv) Authorization and Description of the Underlying Common Stock. The Underlying Common Stock conforms to all statements relating thereto contained or incorporated by reference in the Preliminary Prospectus and the Prospectus. Upon issuance and delivery of the Securities in accordance with this Agreement and the Indenture, the Securities will be convertible at the option of the holder thereof for shares of Underlying Common Stock in accordance with the terms of the Securities and the Indenture; the shares of the Underlying Common Stock issuable upon conversion of the Securities have been duly authorized and reserved for issuance upon such conversion by all necessary corporate action and such shares, when issued upon such conversion, will be validly issued and will be fully paid and non-assessable; no holder of such shares will be subject to personal liability by reason of being such a holder; and the issuance of such shares upon such conversion will not be subject to the preemptive or other similar rights of any securityholder of the Company.

(xv) Absence of Defaults and Conflicts. Neither the Company nor any of its subsidiaries is (A) in violation of its charter or by-laws, or (B) except for such defaults that would not, individually or in the aggregate, reasonably be expected to result in a Material Adverse Effect, in default in the performance or observance of any obligation, agreement, covenant or condition contained in any contract, indenture, mortgage, deed of trust, loan or credit agreement, note, lease or other agreement or instrument to which the Company or any of its subsidiaries is a party or by which it or any of them may be bound, or to which any of the property or assets of the Company or any subsidiary is subject (collectively, “Agreements and Instruments”) and the execution, delivery and performance of this Agreement, the Indenture, the DTC Agreement and the Securities and any other agreement or instrument entered into or issued or to be entered into or issued by the Company in connection with the transactions contemplated hereby or thereby or in the Prospectus and the consummation of the transactions contemplated herein and in the Registration Statement, the General Disclosure Package and the Prospectus (including the offering, issuance and sale of the Securities pursuant to this Agreement and the Indenture and the use of the proceeds from the sale of the Securities as described in the Statutory Prospectus and the Prospectus under the caption “Use of Proceeds,” and the issuance of the shares of Underlying Common Stock issuable upon conversion of the Securities), and compliance by the Company with its obligations hereunder and under the Indenture and the Securities, have been duly authorized by all necessary corporate action and do not and will not, whether with or without the giving of notice or passage of time or both, conflict with or constitute a breach of, or default or Repayment Event (as defined below) under, or result in the creation or imposition of any lien, charge or encumbrance upon any property or assets of the Company or any subsidiary pursuant to, the Agreements and Instruments (except for such conflicts, breaches, defaults or Repayment Events or liens, charges or encumbrances that would not be reasonably likely to result in a Material Adverse Effect), nor will such action result in (C) any violation of the provisions of the charter or by-laws of the Company or any subsidiary or (D) except for such defaults that would not, individually or in the aggregate, reasonably be expected to result in a Material Adverse Effect, a violation of any

applicable law, statute, rule, regulation, judgment, order, writ or decree of any government, government instrumentality or court, domestic or foreign, having jurisdiction over the Company or any subsidiary or any of their assets, properties or operations. As used herein, a “Repayment Event” means any event or condition which gives the holder of any note, debenture or other evidence of indebtedness (or any person acting on such holder’s behalf) the right to require the repurchase, redemption or repayment of all or a portion of such indebtedness by the Company or any subsidiary of the Company.

(xvi) Absence of Labor Dispute. No labor dispute with the employees of the Company or any subsidiary exists or, to the knowledge of the Company, is imminent, and the Company is not aware of any existing or imminent labor disturbance by the employees of any of its or any of its subsidiaries’ principal suppliers, manufacturers, customers or contractors, which, in either case, would result in a Material Adverse Effect.

(xvii) Absence of Proceedings. There is no claim, action, suit, proceeding, inquiry, audit, review or investigation before or brought by any court or governmental agency or body, domestic or foreign, now pending, or, to the knowledge of the Company, threatened against the Company or any subsidiary of the Company, or, to the knowledge of the Company, otherwise involving the Company or any subsidiary of the Company which is required to be disclosed in the Registration Statement, the Statutory Prospectus and the Prospectus (other than as disclosed therein), or which would be reasonably likely to result in a Material Adverse Effect, or which would be reasonably likely to materially and adversely affect the consummation of the transactions contemplated in this Agreement or the performance by the Company of its obligations hereunder; the aggregate of all pending legal or governmental proceedings to which the Company or any subsidiary is a party or of which any of their respective property or assets is the subject which are not described in the Registration Statement, the Statutory Prospectus and the Prospectus including ordinary routine litigation incidental to the business, would not be reasonably likely to result in a Material Adverse Effect.

(xviii) Absence of Rulemaking or Similar Proceedings. To the Company’s knowledge, there are no rulemaking or similar proceedings before the Food and Drug Administration, the Department of Health and Human Services, the Centers for Medicare and Medicaid Services or any other federal, state, local or foreign governmental bodies that regulate the Company’s or any of its subsidiaries’ activities, which would be expected to have a Material Adverse Effect.

(xix) Accuracy of Descriptions and Exhibits. There are no statutes, regulations, contracts or documents which are required to be described in the Registration Statement, the Statutory Prospectus or the Prospectus or the documents incorporated by reference therein or to be filed as exhibits thereto which have not been so described and filed as required.

(xx) Possession of Intellectual Property. The Company and its subsidiaries own or license or have rights to use, make, sell, and otherwise exploit, all Intellectual Property necessary for the conduct of the Company’s business as now conducted except as such failure to own or license such rights would not have a Material Adverse Effect.

Except as set forth in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2006, as amended, which is incorporated by reference into the Registration Statement, the Preliminary Prospectus, and the Prospectus under the caption “Item 1. Description of Business”, (i) to the knowledge of the Company, there is no infringement, misappropriation or violation by other parties of any Intellectual Property described in the preceding sentence, except as such infringement, misappropriation or violation would not reasonably be expected to have a Material Adverse Effect; (ii) there is no pending, or, to the knowledge of the Company, threatened action, suit, proceeding or claim by others to which the Company or any of its subsidiaries is a party, or to the knowledge of the Company, otherwise challenging the Company’s or its subsidiaries’ rights in or to, or exploitation of, any such Intellectual Property, and the Company has no knowledge of any facts which would form a reasonable basis for any such claim; (iii) except with respect to certain trademarks of the Company which are being opposed, such Intellectual Property owned by the Company and to the knowledge of the Company, such Intellectual Property licensed to the Company have not been adjudged invalid or unenforceable, in whole or in part, and there is no pending or, to the knowledge of the Company, threatened action, suit, proceeding or claim by others challenging the validity or scope of any such Intellectual Property, and the Company has no knowledge of any facts which would form a reasonable basis for any such claim; (iv) there is no pending or to the knowledge of the Company, threatened action, suit, proceeding or claim by others that the Company infringes, misappropriates or otherwise violates any Intellectual Property or other proprietary rights of others, the Company has not received any written notice of such claim and the Company has no knowledge of any other fact which would form a reasonable basis for any such claim; and (v) to the Company’s knowledge, no employee or independent contractor of the Company is in or has ever been in violation of any term of any employment contract, patent disclosure agreement, invention assignment agreement, non-competition agreement, non-solicitation agreement, nondisclosure agreement or any restrictive covenant to or with a former employer or independent contractor where the basis of such violation relates to such employee’s employment or independent contractor’s engagement with the Company or actions undertaken while employed or engaged with the Company, except as such violation would not reasonably be expected to have a Material Adverse Effect. “Intellectual Property” shall mean all patents, patent rights, patent applications, trade and service marks, trade and service mark registrations, trade names, copyrights, licenses, inventions, trade secrets, technology, know-how and other unpatented and/or unpatentable proprietary or confidential information, systems or procedures owned, licensed or used by the Company.

(xxi) Absence of Further Requirements. No filing with, or authorization, approval, consent, license, order, registration, qualification or decree of, any court or governmental authority or agency is necessary or required for the performance by the Company of its obligations hereunder, in connection with the offering, issuance or sale of the Securities hereunder, the issuance of shares of Underlying Common Stock upon conversion of the Securities, the consummation of the transactions contemplated by this Agreement, or for the due execution, delivery or performance of this Agreement, the Indenture or the DTC Agreement by the Company, in each case on the terms contemplated by the Prospectus and the General Disclosure Package except such as (i) have been already obtained or made, (ii) may be required under the Act or the Rules and Regulations or state securities laws, or (iii) with respect to the listing of the Securities on the SWX Swiss Exchange or the NASDAQ which will be made prior to the Closing.

(xxii) Absence of Manipulation. Neither the Company nor, to the knowledge of the Company any affiliate of the Company has taken, nor will the Company or, to the knowledge of the Company, any affiliate take, directly or indirectly, any action which is designed to or which has constituted or which would be expected to cause or result in stabilization or manipulation of the price of any security of the Company to facilitate the sale or resale of the Securities.

(xxiii) Possession of Licenses and Permits. The Company and its subsidiaries possess such regulatory and quasi-regulatory permits, licenses, approvals, consents and other authorizations (collectively, “Governmental Licenses”) issued by the appropriate federal, state, local or foreign regulatory agencies or bodies necessary to conduct the business now operated by them, except where the failure so to possess would not, singly or in the aggregate, reasonably be expected to result in a Material Adverse Effect; the Company and its subsidiaries are in compliance with the terms and conditions of all such Governmental Licenses, except where the failure so to comply would not, singly or in the aggregate, reasonably be expected to result in a Material Adverse Effect; all of the Governmental Licenses are valid and in full force and effect, except when the invalidity of such Governmental Licenses or the failure of such Governmental Licenses to be in full force and effect would not, singly or in the aggregate, reasonably be expected to result in a Material Adverse Effect; and neither the Company nor any of its subsidiaries has knowledge of any proceedings relating to the revocation or modification of any such Governmental Licenses which, singly or in the aggregate, if the subject of an unfavorable decision, ruling or finding, would reasonably be expected to result in a Material Adverse Effect.

(xxiv) Regulatory Authorities. Except as described in the General Disclosure Package or the Prospectus, each of the Company and its subsidiaries: (a) is and at all times has been in material compliance with all statutes, rules or regulations applicable to the ownership, testing, development, manufacture, packaging, processing, use, distribution, marketing, labeling, promotion, sale, offer for sale, storage, import, export or disposal of any product manufactured or distributed by the Company (“Applicable Laws”); (b) has not received any FDA Form 483, notice of adverse finding, warning letter, untitled letter or other correspondence or notice from the U.S. Food and Drug Administration or any other federal, state or foreign governmental authority having authority over the Company (“Governmental Authority”) alleging or asserting material noncompliance with any Applicable Laws or any licenses, certificates, approvals, clearances, authorizations, permits and supplements or amendments thereto required by any such Applicable Laws (“Authorizations”); (c) possesses all Authorizations and such Authorizations are valid and in full force and effect and are not in material violation of any term of any such Authorizations; (d) has not received notice of any claim, action, suit, proceeding, hearing, enforcement, investigation, arbitration or other action from any Governmental Authority or third party alleging that any product, operation or activity is in violation of any Applicable Laws or Authorizations and have no knowledge that any such Governmental Authority or third party is considering any such claim, litigation,

arbitration, action, suit, investigation or proceeding; (e) has not received notice that any Governmental Authority has taken, is taking or intends to take action to limit, suspend, modify or revoke any Authorizations and has no knowledge that any such Governmental Authority is considering such action; and (f) has filed, obtained, maintained or submitted all material reports, documents, forms, notices, applications, records, claims, submissions and supplements or amendments as required by any Applicable Laws or Authorizations and that all such reports, documents, forms, notices, applications, records, claims, submissions and supplements or amendments were materially complete and correct on the date filed (or were corrected or supplemented by a subsequent submission).

The studies, tests and preclinical and clinical trials conducted by or on behalf of the Company and each of its subsidiaries were and, if still pending, are being conducted in all material respects in accordance with experimental protocols, procedures and controls pursuant to accepted professional scientific standards and all Applicable Laws and Authorizations, including, without limitation, the Federal Food, Drug and Cosmetic Act and implementing regulations at 21 C.F.R. Parts 50, 54, 56, 58 and 312; the descriptions of the results of such studies, tests and trials contained in the Registration Statement, the General Disclosure Package or the Prospectus are accurate and complete in all material respects and fairly present the data derived from such studies, tests and trials; except to the extent disclosed in the General Disclosure Package or the Prospectus, the Company is not aware of any studies, tests or trials the results of which the Company believes reasonably call into question the study, test, or trial results described or referred to in the General Disclosure Package or the Prospectus when viewed in the context in which such results are described and the clinical state of development; and neither the Company nor any of its subsidiaries has received any notices or correspondence from any Governmental Authority requiring the termination, suspension or material modification of any studies, tests or preclinical or clinical trials conducted by or on behalf of the Company or any of its subsidiaries.

(xxv) Compliance with Health Care Laws. Neither the Company or any subsidiary, nor the Company’s or any subsidiary’s business operations is in violation of any Health Care Laws, except where such violation would not reasonably be expected to result in a Material Adverse Effect. “Health Care Laws” means (i) the federal and state fraud and abuse laws referred to generally or specifically in the Preliminary Prospectus and the Prospectus, including, but not limited to, the federal Anti-Kickback Statute (42 U.S.C. § 1320a-7(b)), the ▇▇▇▇▇ Law (42 U.S.C. § 1395nn), the civil False Claims Act (31 U.S.C. § 3729 et seq.), the administrative False Claims Law (42 U.S.C. § 1320a-7b(a)), Sections 1320a-7 and 1320a-7a of Title 42 of the United States Code and the regulations promulgated pursuant to such statutes; (ii) the Health Insurance Portability and Accountability Act of 1996 (Pub. L. No. 104-191) and the regulations promulgated thereunder, (iii) Medicare (Title XVIII of the Social Security Act) and the regulations promulgated thereunder; (iv) Medicaid (Title XIX of the Social Security Act) and the regulations promulgated thereunder; (v) the Medicare Prescription Drug, Improvement, and Modernization Act of 2003 (Pub. L. No. 108-173) and the regulations promulgated thereunder; (vi) quality, safety and accreditation requirements of all applicable state laws or regulatory bodies; (vii) any and all other applicable federal, state, or foreign health care laws or regulations, each of (i) through (vii) as may be amended from time to time.

Notwithstanding the foregoing or anything herein to the contrary, the Company makes no representations or warranties regarding compliance by the Company’s physician customers with applicable laws.

(xxvi) Title to Property. The Company and its Subsidiaries do not own any real property. The Company and its Subsidiaries have good title to all other properties (other than Intellectual Property) owned by them, in each case, free and clear of all mortgages, pledges, liens, security interests, claims, restrictions or encumbrances of any kind except such as (a) are described in the General Disclosure Package or the Prospectus or (b) would not, singly or in the aggregate, materially adversely affect the value of such property, and do not interfere with the use made and proposed to be made of such property by the Company or any of its subsidiaries; and all of the leases and subleases material to the business of the Company and its subsidiaries, taken as a whole, and under which the Company or any of its subsidiaries holds properties described in the General Disclosure Package or the Prospectus, are in full force and effect, and neither the Company nor any subsidiary has any notice of any material claim of any sort that has been asserted by anyone adverse to the rights of the Company or any subsidiary under any of the leases or subleases mentioned above, or affecting or questioning the rights of the Company or such subsidiary to the continued possession of the leased or subleased premises under any such lease or sublease.

(xxvii) Investment Company Act. The Company is not required, and upon the issuance and sale of the Securities as herein contemplated and the application of the net proceeds herefrom as described in the Statutory Prospectus or the Prospectus, will not be required, to register as an “investment company” under the Investment Company Act of 1940, as amended (the “1940 Act”).

(xxviii) Environmental Laws. Except as described in the Registration Statement, the General Disclosure Package or the Prospectus and except as would not, singly or in the aggregate, reasonably be expected to result in a Material Adverse Effect, (A) neither the Company nor any of its subsidiaries is in violation of any federal, state, local or foreign statute, law, rule, regulation, ordinance, code or rule of common law or any judicial or administrative interpretation thereof, including any judicial or administrative order, consent, decree or judgment, relating to pollution or protection of human health, the environment (including, without limitation, ambient air, surface water, groundwater, land surface or subsurface strata) or wildlife, including, without limitation, laws and regulations relating to the release or threatened release of chemicals, pollutants, contaminants, wastes, toxic substances, hazardous substances, petroleum or petroleum products, asbestos-containing materials or mold (collectively, “Hazardous Materials”) or to the manufacture, processing, distribution, use, treatment, storage, disposal, transport or handling of Hazardous Materials (collectively, “Environmental Laws”), (B) the Company and its subsidiaries have all permits, authorizations and approvals required under any applicable Environmental Laws and are each in compliance with their requirements, (C) there are no pending or, to the knowledge of the Company, threatened administrative, regulatory or judicial actions, suits, demands, demand letters, claims, liens, notices of noncompliance or violation, investigation or proceedings relating to any Environmental Law against the Company or any of its subsidiaries and (D) there are no events or

circumstances that would reasonably be expected to form the basis of an order for clean-up or remediation, or an action, suit or proceeding by any private party or governmental body or agency, against or affecting the Company or any of its subsidiaries relating to Hazardous Materials or any Environmental Laws.

(xxix) No Broker’s Fees. The Company is not a party to any contract, agreement or understanding with any person (other than this Agreement) that would give rise to a valid claim against the Company or the Underwriter for a brokerage commission, finder’s fee or like payment in connection with the offering and sale of the Securities.

(xxx) Registration Rights. There are no persons with registration rights or other similar rights to have any securities registered pursuant to the Registration Statement or otherwise registered by the Company under the Act.

(xxxi) Margin Rules. Neither the issuance, sale and delivery of the Securities nor the application of the proceeds thereof by the Company as described in the Registration Statement, the General Disclosure Package and the Prospectus will violate Regulation T, U or X of the Board of Governors of the Federal Reserve System or any other regulation of such Board of Governors.

(xxxii) Forward-Looking Statements. No forward-looking statement (within the meaning of Section 27A of the Act and Section 21E of the Exchange Act) contained in the Registration Statement, the General Disclosure Package and the Prospectus has been made or reaffirmed without a reasonable basis or has been disclosed other than in good faith.

(xxxiii) ERISA. Each employee benefit plan, within the meaning of Section 3(3) of the Employee Retirement Income Security Act of 1974, as amended (“ERISA”), that is or has been maintained, administered or contributed to by the Company or any member of any group that includes or has included the Company (as determined under Section 414(b), (c), (m), or (o) of the Internal Revenue Code of 1986, as amended (the “Code”)) (a “Company Affiliate”) for their employees or former employees has been maintained in compliance in all material respects with its terms and the requirements of any applicable statutes, orders, rules and regulations, including but not limited to ERISA and the Code; no prohibited transaction, within the meaning of Section 406 of ERISA or Section 4975 of the Code, has occurred with respect to any such plan, excluding transactions effected pursuant to a statutory or administrative exemption; and for each such plan that is subject to the funding rules of Section 412 of the Code or Section 302 of ERISA, there has not occurred any “accumulated funding deficiency” within the meaning of Section 412 of the Code or Section 302 of ERISA, respectively, whether or not waived, and the fair market value of the assets of each such plan (excluding for these purposes accrued but unpaid contributions) exceeds the present value of all benefits accrued under such plan determined as of the plan’s most recent actuarial report using the actuarial assumptions set forth therein, and such actuarial assumptions are reasonable in the aggregate. Neither the Company nor any Company Affiliate has incurred or is reasonably expected to incur any liability to any “multiemployer plan” within the meaning of Section 3(37) or 4001(a)(3) of ERISA. Neither the Company nor any Company Affiliate has incurred or is reasonably expected to incur any liability under any “welfare plan” within the meaning of Section 3(1) of ERISA that provides benefits to retired or terminated employees (other than as required by Section 4980B of the Code or Title I, Subtitle B, Part 6 of ERISA).

(xxxiv) Accounting Controls and Disclosure Controls. The Company and each of its subsidiaries maintain a system of internal accounting controls sufficient to provide reasonable assurances that (A) transactions are executed in accordance with management’s general or specific authorization; (B) transactions are recorded as necessary to permit preparation of financial statements in conformity with GAAP and to maintain accountability for assets; (C) access to assets is permitted only in accordance with management’s general or specific authorization; and (D) the recorded accountability for assets is compared with existing assets at reasonable intervals and appropriate action is taken with respect to any differences.

The Company and its consolidated subsidiaries employ disclosure controls and procedures that are designed to ensure that information required to be disclosed by the Company in the reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported, within the time periods specified in the Commission’s rules and forms, and is accumulated and communicated to the Company’s management, including its principal executive officer or officers and principal financial officer or officers, as appropriate, to allow timely decisions regarding disclosure.

(xxxv) Insurance. The Company and its subsidiaries carry, or are covered by, insurance issued by insurers of nationally recognized financial responsibility in such amounts and covering such risks as is reasonably adequate for the conduct of its business and the value of its properties and as is customary for companies engaged in similar businesses in similar industries; and neither the Company nor any of its subsidiaries has (i) received written notice from any insurer or agent of such insurer that capital improvements or other expenditures are required or necessary to be made in order to continue such insurance or (ii) any reason to believe that it will not be able to renew its existing insurance coverage as and when such coverage expires or to obtain similar coverage at reasonable cost from similar insurers as may be necessary to continue its business. All such insurance is outstanding and duly in force on the date hereof.

(xxxvi) Related Party Transactions. No relationship, direct or indirect, exists between or among the Company or any of its subsidiaries, on the one hand, and the directors, officers, stockholders, customers or suppliers of the Company or any of its subsidiaries, on the other, that is required by the Act to be described in the Registration Statement, the Preliminary Prospectus or the Prospectus and that is not so described therein.

(xxxvii) Foreign Corrupt Practices Act. Neither the Company nor any of its subsidiaries nor, to the knowledge of the Company, any director, officer, agent, employee acting on behalf of the Company or any of its subsidiaries has (i) used any corporate funds for any unlawful contribution, gift, entertainment or other unlawful expense relating to political activity; (ii) made any direct or indirect unlawful payment to any foreign or domestic government official or employee from corporate funds; (iii) violated or is in violation of any provision of the Foreign Corrupt Practices Act of 1977; or (iv) made any bribe, rebate, payoff, influence payment, kickback or other unlawful payment.

(xxxviii) Money Laundering Laws. The operations of the Company are and have been conducted at all times in compliance in all material respects with applicable financial recordkeeping and reporting requirements of the Currency and Foreign Transactions Reporting Act of 1970, as amended, the money laundering statutes of all jurisdictions, the rules and regulations thereunder and any related or similar rules, regulations or guidelines, issued, administered or enforced by any governmental agency (collectively, the “Money Laundering Laws”) and no action, suit or proceeding by or before any court or governmental agency, authority or body or any arbitrator involving the Company with respect to the Money Laundering Laws is pending or, to the best knowledge of the Company, threatened.

(xxxix) OFAC. Neither the Company nor, to the knowledge of the Company, any director, officer, agent, employee, affiliate or person acting on behalf of the Company is currently subject to any U.S. sanctions administered by the Office of Foreign Assets Control of the U.S. Treasury Department (“OFAC”); and the Company will not directly or indirectly use the proceeds of the offering, or lend, contribute or otherwise make available such proceeds to any subsidiary, joint venture partner or other person or entity, for the purpose of financing the activities of any person currently subject to any U.S. sanctions administered by OFAC.

(xl) Statistical and Market Data. Nothing has come to the attention of the Company that has caused the Company to believe that the statistical and market-related data included in the Registration Statement, the General Disclosure Package or the Prospectus is not based on or derived from sources that are reliable and accurate in all material respects.

(xli) Compliance with the ▇▇▇▇▇▇▇▇-▇▇▇▇▇ Act. There is and has been no failure on the part of the Company or to the knowledge of the Company, on the part of any of the Company’s directors or officers, in their capacities as such, to comply in all material respects with any applicable provision of the ▇▇▇▇▇▇▇▇-▇▇▇▇▇ Act, including without limitation Section 402 related to loans and Sections 302 and 906 related to certifications.

(xlii) ▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇. The Company has a written ▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇ policy applicable to all officers and directors of the Company. Unless the Underwriter otherwise agrees, in its sole discretion and in writing, prior to the 90th day following the Closing Time, the Company will not waive the terms of its ▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇ policy.

(xliii) Certifications. The Chief Executive Officer and the Chief Financial Officer of the Company have signed, and the Company has furnished to the Commission, all certifications required by Sections 302 and 906 of the ▇▇▇▇▇▇▇▇-▇▇▇▇▇ Act. Such certifications contain no qualifications or exceptions to the matters certified therein other than such qualifications or exceptions as are part of the standard form of certification promulgated by the Commission, and have not been modified or withdrawn; and neither the Company nor any of its officers has received notice from any governmental entity questioning or challenging the accuracy, completeness, form or manner of filing or submission of such certifications. The Company is otherwise in compliance in all material respects with all applicable provisions currently in effect of the ▇▇▇▇▇▇▇▇-▇▇▇▇▇ Act and the rules and regulations issued thereunder by the Commission.

(xliv) Audit Committee/Internal Controls. The Company’s board of directors has validly appointed an audit committee whose composition satisfies the requirements of Rule 4350(d)(2) of the Rules of the NASD (the “NASD Rules”) and the Company’s board of directors and/or the audit committee has adopted a charter that satisfies the requirements of Rule 4350(d)(1) of the NASD Rules. Neither the Company’s board of directors nor the audit committee has been informed, nor is any director of the Company aware, of (x) any significant deficiencies in the design or operation of the Company’s internal controls that could adversely affect the Company’s ability to record, process, summarize and report financial data or any material weakness in the Company’s internal controls; or (y) any fraud, whether or not material, that involves management or other employees of the Company who have a significant role in the Company’s internal controls.

(xlv) Stock Options. With respect to the stock options (the “Stock Options”) granted pursuant to the Company’s Option Plans, (i) each Stock Option intended to qualify as an “incentive stock option” under Section 422 of the Code as of its Grant Date (as defined below) so qualified, (ii) each grant of a Stock Option was duly authorized no later than the date on which the grant of such Stock Option was by its terms to be effective (the “Grant Date”) by all necessary corporate action, including, as applicable, approval by the board of directors of the Company (or a duly constituted and authorized committee thereof) and any required stockholder approval by the necessary number of votes or written consents, (iii) each such grant was made in accordance with the terms of the applicable Stock Plan, the Exchange Act and the rules of the NASDAQ Global Market and (iv) each such grant was properly accounted for in accordance with GAAP in the financial statements (including the related notes) of the Company and disclosed in the Company’s filings with the Commission to the extent required in accordance with the Exchange Act and all other applicable laws. There is no and has been no policy or practice of the Company to coordinate the grant of Stock Options prior to the release or other public announcement of material information regarding the Company or its subsidiaries or their results of operations or prospects.

(xlvi) Taxes. The Company and each of its subsidiaries have timely filed all federal, state, local and foreign income and franchise tax returns required to be filed and is not in default in the payment of any taxes which were payable pursuant to said returns or any assessments with respect thereto, other than any which the Company or any of its subsidiaries is contesting in good faith. There is no pending dispute with any taxing authority relating to any of such returns and the Company has no knowledge of any proposed liability for any tax to be imposed upon the properties or assets of the Company or any of its subsidiaries for which there is not an adequate reserve reflected in the Company’s financial statements included in the Registration Statement.

(xlvii) Listing on NASDAQ and SWX Swiss Exchange. The Common Stock of the Company is listed on the NASDAQ under the ticker symbol “BMRN”, and on the SWX Swiss Exchange under the ticker symbol “BMRN”. The Company has not received any notice that it is not in compliance with the listing requirements of the NASDAQ or

the SWX Swiss Exchange. The Company is, and has no reason to believe that it will not in the foreseeable future continue to be (except as a result of minimum trading price requirements), in compliance with all such listing requirements. There are no affiliations with the NASD or the SWX Swiss Exchange among the Company’s officers or directors. A registration statement relating to the Common Stock on Form 8-A or other applicable form under the Exchange Act has become effective.

(xlviii) Pending Proceedings and Examinations. The Registration Statement is not the subject of a pending proceeding or examination under Section 8(d) or 8(e) of the Act, and the Company is not the subject of a pending proceeding under Section 8A of the Act in connection with the offering of the Securities.

(xlix) Absence of Changes. Since December 31, 2006, except as disclosed on the Company’s annual report filed on form 10-K for the fiscal year ended December 31, 2006 (including all amendments thereto), or as disclosed on a Form 8-K filed since December 31, 2006, the business and operations of the Company have been conducted in the ordinary course consistent with past practice, and there has not been:

any declaration, setting aside or payment of any dividend or other distribution of the assets of the Company with respect to any shares of capital stock of the Company or any repurchase, redemption or other acquisition by the Company or any subsidiary of the Company of any outstanding shares of the Company’s capital stock;

any damage, destruction or loss, whether or not covered by insurance, except for such occurrences, individually and collectively, that have not had, and would not reasonably be expected to result in, a Material Adverse Effect;

any waiver by the Company of a valuable right or of a material debt owed to it, except for such waivers, individually and collectively, that have not had, and would not reasonably be expected to result in, a Material Adverse Effect;

the incurrence of any liability or obligation, direct or contingent, for borrowed money, other than trade payable financing incurred in the ordinary course of business consistent with past practice; or

any change by the Company in its accounting principles, methods or practices or in the manner in which it keeps its accounting books and records, except any such change required by a change in GAAP or by the Commission.

(b) Officer’s Certificates. Any certificate signed by any officer of the Company or any of its subsidiaries delivered to the Underwriter or to counsel for the Underwriter shall be deemed a representation and warranty by the Company to the Underwriter as to the matters covered thereby.

SECTION 2. Sale and Delivery to Underwriter; Closing.

(a) Initial Securities. On the basis of the representations and warranties herein contained and subject to the terms and conditions herein set forth, the Company agrees to sell to the Underwriter, and the Underwriter agrees to purchase from the Company, at the purchase price set forth in Schedule B, the number of Initial Securities set forth in Schedule A.

(b) Option Securities. In addition, on the basis of the representations and warranties herein contained and subject to the terms and conditions herein set forth, the Company hereby grants an option to the Underwriter, to purchase up to an additional $42,375,000 aggregate principal amount of Option Securities at the purchase price set forth in Schedule B for the Initial Securities, plus accrued interest, if any, from the Closing Time to the Date of Delivery (as defined below). The option hereby granted will expire 13 days from and including the date of the purchase of the Initial Securities, and may be exercised in whole or in part from time to time only for the purpose of covering overallotments which may be made in connection with the offering and distribution of the Initial Securities upon notice by ▇▇▇▇▇▇▇ ▇▇▇▇▇ to the Company setting forth the number of Option Securities the Underwriter is then exercising and the time and date of payment and delivery for such Option Securities. Any such time and date of delivery (a “Date of Delivery”) shall be determined by ▇▇▇▇▇▇▇ ▇▇▇▇▇, but shall not be later than seven full business days after the exercise of said option, nor in any event prior to the Closing Time, as hereinafter defined.

(c) Payment. Payment of the purchase price for, and delivery of certificates for, the Securities shall be made at the offices of Paul, Hastings, ▇▇▇▇▇▇▇▇ & ▇▇▇▇▇▇, LLP, ▇▇ ▇▇▇▇▇▇ ▇▇▇▇▇▇, ▇▇▇▇▇▇ ▇▇▇▇▇▇ ▇▇▇▇▇, ▇▇▇ ▇▇▇▇▇▇▇▇▇, ▇▇▇▇▇▇▇▇▇▇, or at such other place as shall be agreed upon by the Underwriter and the Company, at 9:00 A.M. (Eastern time) on the third (fourth, if the pricing occurs after 4:30 P.M. (Eastern time) on any given day) business day after the date hereof, or such other time not later than ten business days after such date as shall be agreed upon by the Underwriter and the Company (such time and date of payment and delivery being herein called “Closing Time”).

In addition, in the event that any or all of the Option Securities are purchased by the Underwriter, payment of the purchase price for, and delivery of certificates for, such Option Securities shall be made at the above-mentioned offices, or at such other place as shall be agreed upon by ▇▇▇▇▇▇▇ ▇▇▇▇▇ and the Company, on each Date of Delivery as specified in the notice from ▇▇▇▇▇▇▇ ▇▇▇▇▇ to the Company.

Payment shall be made to the Company by wire transfer of immediately available funds to a bank account designated by the Company against delivery to the Underwriter for the account of the Underwriter of certificates for the Securities to be purchased by it.

(d) Denominations; Registration. Certificates for the Initial Securities and the Option Securities, if any, shall be evidenced by one or more global securities registered in the name of Cede & Co., as nominee of the DTC for the account of the Underwriter against payment to or upon the order of the Company of the purchase price by wire transfer in immediately available funds. The certificates for the Initial Securities and the Option Securities, if any, will be made available for examination and packaging by the Underwriter in The City of New York not later than 10:00 A.M. (Eastern Time) on the business day prior to the Closing Time or the relevant Date of Delivery, as the case may be.

SECTION 3. Covenants of the Company. The Company covenants with the Underwriter as follows:

(a) Compliance with Securities Regulations and Commission Requests. The Company, subject to Section 3(b), will comply with the requirements of Rule 430B or Rule 424, as applicable, and will notify the Underwriter immediately, and confirm the notice in writing, (i) when any post-effective amendment to the Registration Statement shall become effective, or any supplement to the Prospectus or any amended Prospectus shall have been filed, (ii) of the receipt of any comments from the Commission, (iii) of any request by the Commission for any amendment to the Registration Statement or any amendment or supplement to the Prospectus or any document incorporated by reference therein or otherwise deemed part thereof or for additional information, and (iv) of the issuance by the Commission of any stop order suspending the effectiveness of the Registration Statement or of any order preventing or suspending the use of any Preliminary Prospectus, or of the suspension of the qualification of the Securities for offering or sale in any jurisdiction, or of the initiation or threatening of any proceedings for any of such purposes or of any examination pursuant to Section 8(e) of the Act concerning the Registration Statement, (v) if the Company becomes the subject of a proceeding under Section 8A of the Act in connection with the offering of the Securities and (vi) of the receipt by the Company of any notification with respect to the suspension of the qualification of the Securities for sale in any jurisdiction or the institution or threatening of any proceeding for such purpose. The Company will promptly effect the filings necessary pursuant to Rule 424(b) (without reliance on Rule 424(b)(8)) and will take such steps as it deems necessary to ascertain promptly whether the form of prospectus supplement transmitted for filing under Rule 424(b) was received for filing by the Commission and, in the event that it was not, it will promptly file such prospectus supplement. The Company will make every reasonable effort to prevent the issuance of any stop order and, if any stop order is issued, to obtain the lifting thereof at the earliest possible moment, including, if necessary, by filing an amendment to the Registration Statement or a new registration statement and using its best efforts to have such amendment or new registration statement declared effective as soon as practicable. The Company shall pay the required Commission filing fees relating to the Securities within the time required by Rule 456(b)(1) (i) of the Rules and Regulations without regard to the proviso therein and otherwise in accordance with Rules 456(b) and 457(r) of the Rules and Regulations.

(b) Filing of Amendments and Exchange Act Documents; Preparation of Final Term Sheet. The Company will give the Underwriter notice of its intention to file or prepare any amendment to the Registration Statement or new registration statement relating to the Securities or any amendment, supplement or revision to either any Preliminary Prospectus (including any prospectus included in the Original Registration Statement or amendment thereto at the time it became effective) or to the Prospectus, whether pursuant to the Act, the Exchange Act or otherwise, and the Company will furnish the Underwriter with copies of any such documents a reasonable amount of time prior to such proposed filing or use, as the case may be, and will not file or use any such document to which the Underwriter or counsel for the Underwriter shall reasonably object in writing, except as required pursuant to applicable law, legal or administrative order or process. The Company has given the Underwriter notice of any

filings made pursuant to the Exchange Act or Exchange Act Regulations within 48 hours prior to the Applicable Time; the Company will give the Underwriter notice of its intention to make any such filing from the Applicable Time to the Closing Time and will furnish the Underwriter with copies of any such documents a reasonable amount of time prior to such proposed filing and will not file or use any such document to which the Underwriter or counsel for the Underwriter shall reasonably object to in writing, except as required pursuant to applicable law, legal or administrative order or process. The Company will prepare a final term sheet (the “Final Term Sheet”) reflecting the final terms of the Securities, in form and substance satisfactory to the Underwriter, and shall file such Final Term Sheet as an “issuer free writing prospectus” pursuant to Rule 433 prior to the close of business two business days after the date hereof; provided that the Company shall furnish the Underwriter with copies of any such Final Term Sheet a reasonable amount of time prior to such proposed filing and will not use or file any such document to which the Underwriter or counsel to the Underwriter shall object.

(c) Delivery of Registration Statements. The Company has furnished or will deliver to the Underwriter and counsel for the Underwriter, without charge, signed copies of the Original Registration Statement and of each amendment thereto (including exhibits filed therewith or incorporated by reference therein and documents incorporated or deemed to be incorporated by reference therein or otherwise deemed to be a part thereof), and signed copies of all consents and certificates of experts, and will also deliver to the Underwriter, without charge, a conformed copy of the Registration Statement as originally filed and of each amendment thereto (without exhibits). The copies of the Registration Statement and each amendment thereto furnished to the Underwriter will be identical to the electronically transmitted copies thereof filed with the Commission pursuant to ▇▇▇▇▇, except to the extent permitted by Regulation S-T.

(d) Delivery of Prospectuses. The Company has delivered to the Underwriter, without charge, as many copies of each Preliminary Prospectus as the Underwriter reasonably requested, and the Company hereby consents to the use of such copies for purposes permitted by the Act. The Company will furnish to the Underwriter, without charge, during the period when the Prospectus is required to be delivered under the Act, such number of copies of the Prospectus (as amended or supplemented) as the Underwriter may reasonably request. The Prospectus and any amendments or supplements thereto furnished to the Underwriter will be identical to the electronically transmitted copies thereof filed with the Commission pursuant to ▇▇▇▇▇, except to the extent permitted by Regulation S-T.

(e) Continued Compliance with Securities Laws. The Company will comply with the Act and the Rules and Regulations, the Exchange Act and the Exchange Act Regulations, the 1939 Act and the Trust Indenture Regulations so as to permit the completion of the distribution of the Securities as contemplated in this Agreement and in the General Disclosure Package. If at any time when a prospectus is required by the Act to be delivered in connection with sales of the Securities (or would be required upon request by a purchaser pursuant to Rule 173 under the Act), any event shall occur or condition shall exist as a result of which it is necessary, in the opinion of counsel for the Underwriter or for the Company, to amend the Registration Statement or amend or supplement the Prospectus in order that the Prospectus will not include any untrue statements of a material fact or omit to state a material fact necessary in order to make the statements therein not misleading in the light of the circumstances existing at the time it is delivered to a purchaser, or if it shall be necessary, in the opinion of such counsel, at any such

time to amend the Registration Statement or to file a new registration statement or amend or supplement the Prospectus in order to comply with the requirements of the Act or the Rules and Regulations, the Company will promptly prepare and file with the Commission, subject to Section 3(b), such amendment, supplement or new registration statement as may be necessary to correct such statement or omission or to comply with such requirements. The Company will use its commercially reasonable efforts to have such amendment or new registration statement declared effective as soon as possible (if it is not an automatic shelf registration statement with respect to the Securities), and the Company will furnish to the Underwriter such number of copies of such amendment, supplement or new registration statement as the Underwriter may reasonably request. If at any time following the issuance of an Issuer Free Writing Prospectus there occurred or occurs an event or development as a result of which such Issuer Free Writing Prospectus conflicted or would conflict with the information contained in the Registration Statement or any Preliminary Prospectus or included or would include an untrue statement of a material fact or omitted or would omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances prevailing at that subsequent time, not misleading, the Company will promptly notify ▇▇▇▇▇▇▇ ▇▇▇▇▇ and will promptly amend or supplement, at its own expense, such Issuer Free Writing Prospectus, or the Statutory Prospectus and the Prospectus to eliminate or correct such conflict, untrue statement or omission.

(f) Blue Sky Qualifications. The Company will use its best efforts, in cooperation with the Underwriter, to qualify the Securities and the shares of underlying Common Stock for offering and sale under the applicable securities laws of such states and other domestic, or if applicable, foreign, jurisdictions as the Underwriter may designate and to maintain such qualifications in effect for a period of not less than one year from the date hereof; provided, however, that the Company shall not be obligated to file any general consent to service of process or to qualify as a foreign corporation or as a dealer in securities in any jurisdiction in which it is not so qualified or to subject itself to taxation in respect of doing business in any jurisdiction in which it is not otherwise so subject.

(g) Rule 158. The Company will timely file such reports pursuant to the Exchange Act as are necessary in order to make generally available to its securityholders as soon as practicable an earnings statement for the purposes of, and to provide to the Underwriter the benefits contemplated by, the last paragraph of Section 11(a) of the Act.

(h) Compliance with Registration Statement. The Company will comply with all the undertakings contained in the Registration Statement.

(i) Use of Proceeds. The Company will use the net proceeds received by it from the sale of the Securities in the manner specified in the Prospectus under “Use of Proceeds”.

(j) Restriction on Sale of Common Stock. During a period of ninety (90) days from the date of the Final Prospectus Supplement, the Company will not, without the prior written consent of ▇▇▇▇▇▇▇ ▇▇▇▇▇, (i) directly or indirectly, offer, pledge, sell, contract to sell, sell any option or contract to purchase, purchase any option or contract to sell, grant any option, right or warrant to purchase or otherwise transfer or dispose of any share of Common Stock or any securities convertible into or exercisable or exchangeable for Common Stock or file any registration statement or prospectus under the Act with respect to any of the foregoing or (ii) enter into any swap or any other agreement or any transaction that transfers, in whole or in part,

directly or indirectly, the economic consequence of ownership of the Common Stock, whether any such swap or transaction described in clause (i) or (ii) above is to be settled by delivery of Common Stock or such other securities, in cash or otherwise. The foregoing sentence shall not apply to (A) the Securities to be sold hereunder, (B) any shares of Common Stock issued by the Company upon the exercise of an option or warrant or the conversion of a security outstanding on the date hereof and referred to in the Prospectus, (C) any shares of Common Stock issued or options to purchase Common Stock granted pursuant to existing employee benefit plans of the Company referred to in the Prospectus, (D) any shares of Common Stock issued or options to purchase Common Stock granted pursuant to any non-employee director stock plan or dividend reinvestment plan (E) any shares of Common Stock issued or sold in connection with any joint venture, partnering or other arrangement with any strategic investor or partner of the Company, (F) any shares of Common Stock issued or sold in connection with any acquisition made by the Company, or (G) any note issued to Medicis Pharmaceutical Corporation or any of its affiliates pursuant to the Settlement Agreement and Mutual Release dated January 12, 2005, by and among BioMarin Pharmaceutical Inc., BioMarin Pediatrics Inc., Medicis Pharmaceutical Corporation and Medicis Pediatrics, Inc. (f/k/a Ascent Pediatrics, Inc.) or any securities issuable upon conversion of the principal amount of or interest under any such note. Notwithstanding the foregoing, if (1) during the last 17 days of the 90-day restricted period the Company issues an earnings release or material news or a material event relating to the Company occurs or (2) prior to the expiration of the 90-day restricted period, the Company announces that it will release earnings results or becomes aware that material news or a material event will occur during the 16-day period beginning on the last day of the 90-day restricted period, the restrictions imposed in this clause (j) shall continue to apply until the expiration of the 18-day period beginning on the issuance of the earnings release or the occurrence of the material news or material event, as applicable, unless ▇▇▇▇▇▇▇ ▇▇▇▇▇ waives, in writing, such extension.

(k) Reservation of Securities. The Company will reserve and keep available at all times, free of preemptive or other similar rights, a sufficient number of shares of Common Stock, for the purposes of enabling the Company to satisfy any obligations to issue Underlying Common Stock upon conversion of the Securities.

(l) Reporting Requirements. The Company, during the period when the Prospectus is required to be delivered under the Act, will file all documents required to be filed with the Commission pursuant to the Exchange Act within the time periods required by the Exchange Act and the rules and regulations of the Commission thereunder.

(m) Listing. The Company will use its commercially reasonable efforts to effect and maintain the quotation of the Underlying Common Stock issuable upon conversion of the Securities on the Nasdaq Global Market.

(n) DTC. The Company will cooperate with the Underwriter and use its best efforts to permit the offered Securities to be eligible for clearance and settlement through the facilities of the DTC.

(o) Issuer Free Writing Prospectuses. The Company represents and agrees that, unless it obtains the prior consent of the Underwriter, and the Underwriter represents and agrees that, unless it obtains the prior consent of the Company, it has not made and will not make any offer relating to the Securities that would constitute an “issuer free writing prospectus,” as

defined in Rule 433, or that would otherwise constitute a “free writing prospectus,” as defined in Rule 405, required to be filed with the Commission; provided, however, that prior to the preparation of the Final Term Sheet in accordance with Section 3(b), the Underwriter is authorized to use the information with respect to the final terms of the Securities in communications conveying information relating to the offering to investors. Any such free writing prospectus consented to by the Underwriter or by the Company, as the case may be, is hereinafter referred to as a “Permitted Free Writing Prospectus.” The Company represents that it has treated or agrees that it will treat each Permitted Free Writing Prospectus as an “issuer free writing prospectus,” as defined in Rule 433, and has complied and will comply with the requirements of Rule 433 applicable to any Permitted Free Writing Prospectus, including timely filing with the Commission where required, legending and record keeping.

(p) Controls and Procedures. For a period of one year from the date of this Agreement, the Company and its subsidiaries will maintain such controls and other procedures, including without limitation those required by Sections 302 and 906 of the ▇▇▇▇▇▇▇▇-▇▇▇▇▇ Act and the applicable regulations thereunder, that are designed to ensure that information required to be disclosed by the Company in the reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the Commission’s rules and forms, including without limitation, controls and procedures designed to ensure that information required to be disclosed by the Company in the reports that it files or submits under the Exchange Act is accumulated and communicated to the Company’s management, including its principal executive officer and its principal financial officer, or persons performing similar functions, as appropriate to allow timely decisions regarding required disclosure, to ensure that material information relating to Company, including its subsidiaries, is made known to them by others within those entities.

(q) ▇▇▇▇▇▇▇▇-▇▇▇▇▇ Act. For a period of one year from the date of this Agreement, the Company and its subsidiaries will comply with all effective applicable provisions of the ▇▇▇▇▇▇▇▇-▇▇▇▇▇ Act.

SECTION 4. Payment of Expenses.

(a) Expenses. The Company will pay or cause to be paid all expenses incident to the performance of its obligations under this Agreement, including (i) the preparation, printing and filing of the Registration Statement (including financial statements and exhibits) as originally filed and of each amendment thereto, (ii) the preparation, printing and delivery to the Underwriter of this Agreement, the Indenture and such other documents as may reasonably be required in connection with the offering, purchase, sale, issuance or delivery of the Securities or the issuance or delivery of the Underlying Common Stock issuable upon conversion thereof, (iii) the preparation, issuance and delivery of the certificates for the Securities to the Underwriter, including any stock or other transfer taxes, any stamp or other duties payable upon the sale, issuance and delivery of the Securities to the Underwriter, and any charges of DTC in connection therewith, and the certificates for the Underlying Common Stock upon conversion thereof, (iv) the fees and disbursements of the Company’s counsel, accountants and other advisors, (v) the qualification of the Securities and the Underlying Common Stock under securities laws in accordance with the provisions of Section 3(f) hereof, including filing fees and the reasonable fees and disbursements of counsel for the Underwriter in connection therewith and in connection with the preparation of the Blue Sky Survey and any supplement thereto,

(vi) the printing and delivery to the Underwriter of copies of each Preliminary Prospectus, any Permitted Free Writing Prospectus and of the Prospectus and any amendments or supplements thereto (including without limitation any costs associated with electronic delivery of these materials), (vii) the preparation, printing and delivery to the Underwriter of copies of the Blue Sky Survey and any supplement thereto, (viii) the fees and expenses of any transfer agent or registrar for the Securities, (ix) the costs and expenses of the Company relating to investor presentations on any “road show” undertaken in connection with the marketing of the Securities, including without limitation, expenses associated with the production of road show slides and graphics, fees and expenses of any consultants engaged in connection with the road show presentations, lodging expenses of the Underwriter and officers of the Company and any such consultants (provided the Underwriter shall be responsible for the Underwriter’s lodging expenses), and one-half of the cost of aircraft chartered with the Company’s consent, or other transportation used in connection with the road show (with the other half being paid by the Underwriter, (x) the filing fees incident to, and the reasonable fees and disbursements of counsel to the Underwriter in connection with the review by the National Association of Securities Dealers, Inc. (the “NASD”) of the terms of the sale of the Securities, (xi) the fees and expenses incurred in connection with the inclusion of the Underlying Common Stock issuable upon conversion of the Securities in the Nasdaq Global Market, (x) the costs and expenses (including without limitation any damages or other amounts payable in connection with legal or contractual liability) associated with the reforming of any contracts for sale of the Securities made by the Underwriter caused by a breach of the representation contained in the third paragraph of Section 1(a)(ii), and (xi) the fees and expenses of the Trustee, including the fees and disbursements of counsel for the Trustee in connection with the Indenture and the Securities.

(b) Termination of Agreement. If this Agreement is terminated by the Underwriter in accordance with the provisions of Section 5 or Section 9(a)(i) hereof, the Company shall reimburse the Underwriter for all of its out-of-pocket expenses, including the reasonable fees and disbursements of counsel for the Underwriter.

SECTION

5. Conditions Of Underwriter’s Obligations. The obligations of the Underwriter hereunder are subject to the accuracy of the representations and warranties of the Company contained in Section 1 hereof or in certificates of any officer of the Company or any subsidiary of the Company pursuant to the provisions hereof, to the performance by the Company of its covenants and other obligations hereunder, and to the following further conditions:

(a) Effectiveness of Registration Statement; Filing of Prospectus; Payment of Filing Fee. The Registration Statement has become effective and at Closing Time no stop order suspending the effectiveness of the Registration Statement shall have been issued under the Act or proceedings therefor initiated or threatened by the Commission, and any request on the part of the Commission for additional information shall have been complied with to the reasonable satisfaction of counsel to the Underwriter. A prospectus containing the Rule 430B Information shall have been filed with the Commission in the manner and within the time period required by Rule 424(b) without reliance on Rule 424(b)(8) (or a post-effective amendment providing such information shall have been filed and become effective in accordance with the requirements of Rule 430B). The final term sheet and any other material required to be filed by the Company pursuant to Rule 433(d) under the Rules and Regulations, shall have been filed

with the Commission within the applicable periods prescribed for such filings by Rule 433. The Company shall have paid the required Commission filing fees relating to the Securities within the time period required by Rule 456(b)(1)(i) of the Rules and Regulations without regard to the proviso therein and otherwise in accordance with Rules 456(b) and 457(r) of the Rules and Regulations and, if applicable, shall have updated the “Calculation of Registration Fee” table in accordance with Rule 456(b)(1)(ii) either in a post-effective amendment to the Registration Statement or on the cover page of a prospectus filed pursuant to Rule 424(b).

(b) Opinion of Counsel for Company. At the Closing Time, the Underwriter shall have received the favorable opinion, dated as of the Closing Time, of ▇▇▇▇, ▇▇▇▇▇▇▇▇, ▇▇▇▇▇▇▇▇ & ▇▇▇▇▇▇ LLP, counsel for the Company, in form and substance satisfactory to counsel for the Underwriter, to the effect set forth in Exhibit A hereto.

(c) Opinion of Special Regulatory Counsel for Company. At the Closing Time, the Underwriter shall have received the favorable opinion, dated as of the Closing Time, of ▇▇▇▇▇, ▇▇▇▇▇▇ & ▇▇▇▇▇▇▇▇, P.C., special regulatory counsel for the Company, in form and substance satisfactory to counsel for the Underwriter, to the effect set forth in Exhibit B hereto.

(d) Opinion of Special Patent Counsel for Company. At the Closing Time, the Underwriter shall have received the favorable opinion, dated as of the Closing Time, of ▇▇▇▇▇▇▇▇, ▇▇▇▇▇▇▇▇ & Borun, LLP, special patent counsel for the Company, in form and substance satisfactory to counsel for the Underwriter, to the effect set forth in Exhibit C hereto.

(e) Opinion of Counsel for Underwriter. At the Closing Time, the Underwriter shall have received the favorable opinion, dated as of the Closing Time, of ▇▇▇▇▇▇ & ▇▇▇▇▇▇▇ LLP, counsel for the Underwriter, in form and substance satisfactory to the Underwriter. In giving such opinion such counsel may rely, as to all matters governed by the laws of jurisdictions other than the law of the State of New York and the federal law of the United States, upon the opinions of counsel satisfactory to the Underwriter. Such counsel may also state that, insofar as such opinion involves factual matters, they have relied, to the extent they deem proper, upon certificates of officers of the Company and its subsidiaries and certificates of public officials.

(f) Accountant’s Comfort Letter. On the date of this Agreement, the Underwriter shall have received from KPMG LLP a letter dated such date, in form and substance satisfactory to the Underwriter, containing statements and information of the type ordinarily included in accountants’ “comfort letters” with respect to the financial statements and certain financial information contained in or incorporated by reference into the Registration Statement and the Preliminary Prospectus.

(g) Bring-down Comfort Letter. At the Closing Time, the Underwriter shall have received from KPMG LLP a letter, dated as of the Closing Time, to the effect that they reaffirm the statements made in the letter furnished pursuant to subsection (f) of this Section, except that the specified date referred to shall be a date not more than three business days prior to the Closing Time.

(h) Officers’ Certificate. At the Closing Time, there shall not have been, since the date hereof or since the respective dates as of which information is given in the Prospectus or the General Disclosure Package, any material adverse change in the condition, financial or

otherwise, or in the earnings, business affairs or business prospects of the Company and its subsidiaries taken as a whole, whether or not arising in the ordinary course of business, and the Underwriter shall have received a certificate of the President or a Vice President of the Company and of the chief financial or chief accounting officer of the Company, dated as of the Closing Time, to the effect that (i) there has been no such material adverse change, (ii) the representations and warranties in Section 1(a) hereof are true and correct with the same force and effect as though expressly made at and as of the Closing Time (with the exception of the representations and warranties in Section 1(a)(ix)(A)-(D), which shall be true and correct as of such date), (iii) the Company has complied with all agreements and satisfied all conditions on its part to be performed or satisfied at or prior to the Closing Time, and (iv) no stop order suspending the effectiveness of the Registration Statement has been issued and no proceedings for that purpose have been instituted or are pending or, to their knowledge, contemplated by the Commission.

(i) NASD Matters. The NASD shall, if applicable, have confirmed that it has not raised any objection with respect to the fairness and reasonableness of the underwriting terms and arrangements.

(j) Lock-up Agreements. At the date of this Agreement, the Underwriter shall have received an agreement substantially in the form of Exhibit D hereto signed by the persons listed on Schedule D hereto.

(k) Conditions to Purchase of Option Securities. In the event that the Underwriter exercises its option provided in Section 2(b) hereof to purchase all or any portion of the Option Securities, the representations and warranties of the Company contained herein and the statements in any certificates furnished by the Company or any subsidiary of the Company hereunder shall be true and correct as of each Date of Delivery and, at the relevant Date of Delivery, the Underwriter shall have received:

(i) Officers’ Certificate. A certificate, dated such Date of Delivery, of the President or a Vice President of the Company and of the chief financial or chief accounting officer of the Company confirming that the certificate delivered at the Closing Time pursuant to Section 5(h) hereof remains true and correct as of such Date of Delivery.

(ii) Opinions of Counsel for Company. The favorable opinion of ▇▇▇▇, ▇▇▇▇▇▇▇▇, ▇▇▇▇▇▇▇▇ & ▇▇▇▇▇▇, LLP, counsel for the Company, together with the favorable opinion of ▇▇▇▇▇, ▇▇▇▇▇▇ & ▇▇▇▇▇▇▇▇, P.C., special regulatory counsel for the Company, and the favorable opinion of ▇▇▇▇▇▇▇▇, ▇▇▇▇▇▇▇▇ & ▇▇▇▇▇, LLP, special patent counsel for the Company, each in form and substance satisfactory to counsel for the Underwriter, dated such Date of Delivery, relating to the Option Securities to be purchased on such Date of Delivery and otherwise to the same effect as the opinion required by Sections 5(b), 5(c) and 5(d) hereof.

(iii) Opinion of Counsel for Underwriter. The favorable opinion of ▇▇▇▇▇▇ & ▇▇▇▇▇▇▇ LLP, counsel for the Underwriter, dated such Date of Delivery, relating to the Option Securities to be purchased on such Date of Delivery and otherwise to the same effect as the opinion required by Section 5(e) hereof.

(iv) Bring-down Comfort Letter. A letter from KPMG LLP, in form and substance satisfactory to the Underwriter and dated such Date of Delivery, substantially in the same form and substance as the letter furnished to the Underwriter pursuant to Section 5(g) hereof, except that the “specified date” in the letter furnished pursuant to this paragraph shall be a date not more than five days prior to such Date of Delivery.

(l) Additional Information. At or prior to the Closing Time and at each Date of Delivery, the Underwriter and counsel to the Underwriter shall have been furnished with such information, certificates and documents as they may reasonably require for the purpose of enabling them to pass upon the issuance and sale of the Securities as contemplated herein and related proceedings, or to evidence the accuracy of any of the representations or warranties, or the fulfillment of any of the conditions, herein contained, or otherwise in connection with the Offering contemplated hereby; and all opinions and certificates mentioned above or elsewhere in this Agreement shall be reasonably satisfactory in form and substance to the Underwriter and counsel for the Underwriter.

All such opinions, certificates, letters and other documents will be in compliance with the provisions hereof only if they are satisfactory in form and substance to the Underwriter and counsel for the Underwriter. The Company will furnish the Underwriter with such conformed copies of such opinions, certificates, letters and other documents as they shall reasonably request.

(m) Termination of Agreement. If any condition specified in this Section shall not have been fulfilled when and as required to be fulfilled, this Agreement, or, in the case of any condition to the purchase of Option Securities, on a Date of Delivery which is after the Closing Time, the obligations of the Underwriter to purchase the relevant Option Securities, may be terminated by the Underwriter by written notice to the Company at any time at or prior to the Closing Time or such Date of Delivery, as the case may be, and such termination shall be without liability of any party to any other party except as provided in Section 4 and except that Sections 1, 6, 7 and 8 shall survive any such termination and remain in full force and effect.

SECTION 6. Indemnification.

(a) Indemnification of the Underwriter. The Company agrees to indemnify and hold harmless the Underwriter, its affiliates, as such term is defined in Rule 501(b) under the Act (each, an “Affiliate”), its selling agents and each person, if any, who controls the Underwriter within the meaning of Section 15 of the Act or Section 20 of the Exchange Act as follows:

(i) against any and all loss, liability, claim, damage and expense whatsoever, as incurred, arising out of (A) any untrue statement or alleged untrue statement of a material fact contained in the Registration Statement (or any amendment thereto), including the Rule 430B Information, or the omission or alleged omission therefrom of a material fact required to be stated therein or necessary to make the statements therein not misleading or arising out of, (B) any untrue statement or alleged untrue statement of a material fact included in any Preliminary Prospectus, any Issuer Free Writing Prospectus or the Prospectus (or any amendment or supplement thereto), or the omission or alleged omission therefrom of a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading or (C) any untrue statement or alleged untrue statement of a material fact included in any materials

or information provided to investors by, or with the written approval of, the Company in connection with the marketing of the offering of the Securities, including any road show or investor presentations made to the investors by the Company (whether in person or electronically), or the omission or alleged omission therefrom of a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading;

(ii) against any and all loss, liability, claim, damage and expense whatsoever, as incurred, to the extent of the aggregate amount paid in settlement of any litigation, or any investigation or proceeding by any governmental agency or body, commenced or threatened, or of any claim whatsoever based upon any such untrue statement or omission, or any such alleged untrue statement or omission; provided that (subject to Section 6(d) below) any such settlement is effected with the written consent of the Company; and

(iii) against any and all expense whatsoever, as incurred (including the fees and disbursements of counsel chosen by ▇▇▇▇▇▇▇ ▇▇▇▇▇), reasonably incurred in investigating, preparing or defending against any litigation, or any investigation or proceeding by any governmental agency or body, commenced or threatened, or any claim whatsoever based upon any such untrue statement or omission, or any such alleged untrue statement or omission, to the extent that any such expense is not paid under (i) or (ii) above;

(iv) provided, however, that this indemnity agreement shall not apply to any loss, liability, claim, damage or expense to the extent arising out of any untrue statement or omission or alleged untrue statement or omission made in reliance upon and in conformity with written information furnished to the Company by ▇▇▇▇▇▇▇ ▇▇▇▇▇ expressly for use in the Registration Statement (or any amendment thereto) or the Prospectus, including the Rule 430B Information, or any Preliminary Prospectus, any Issuer Free Writing Prospectus or the Prospectus (or any amendment or supplement thereto).

(b) Indemnification of Company, Directors and Officers. The Underwriter agrees to indemnify and hold harmless the Company, its directors, each of its officers who signed the Registration Statement, and each person, if any, who controls the Company within the meaning of Section 15 of the Act or Section 20 of the Exchange Act, against any and all loss, liability, claim, damage and expense described in the indemnity contained in subsection (a) of this Section, as incurred, but only with respect to untrue statements or omissions, or alleged untrue statements or omissions, made in the Registration Statement (or any amendment thereto), including the Rule 430B Information, or any Preliminary Prospectus, or any Issuer Free Writing Prospectus or the Prospectus (or any amendment or supplement thereto) in reliance upon and in conformity with written information furnished to the Company by such Underwriter through ▇▇▇▇▇▇▇ ▇▇▇▇▇ expressly for use therein.

(c) Actions against Parties; Notification. Each indemnified party shall give notice as promptly as reasonably practicable to each indemnifying party of any action commenced against it in respect of which indemnity may be sought hereunder, but failure to so notify an indemnifying party shall not relieve such indemnifying party from any liability hereunder to the

extent it is not materially prejudiced as a result thereof and in any event shall not relieve it from any liability which it may have otherwise than on account of this indemnity agreement. In the case of parties indemnified pursuant to Section 6(a) above, the Company shall be entitled to assume the defense of any action or proceeding with counsel reasonably satisfactory to the indemnified party. Upon assumption by the Company of the defense of any such action or proceeding, the indemnified party shall have the right to participate in such action or proceeding and to retain its own counsel but the Company shall not be liable for any legal expenses of such counsel retained by such indemnified party in connection with the defense thereof unless (i) the Company has agreed to pay such fees and expenses, (ii) the Company shall have failed to employ counsel reasonably satisfactory to the indemnified party in a timely manner, or (iii) the indemnified party shall have been advised by counsel that there are actual or potential conflicting interests between the Company and the indemnified party, including situations in which there are one or more legal defenses available to the indemnified party that are different from or additional to those available to the Company; provided, however, that the Company shall not, in connection with any one such action or proceeding or separate but substantially similar actions or proceedings in the same jurisdiction arising out of the same general allegations, be liable for the fees and expenses of more than one separate firm of attorneys at any time for all indemnified parties, including ▇▇▇▇▇▇▇ ▇▇▇▇▇. The Company will not settle, compromise or consent to the entry of any judgment in any pending or threatened claim, action or proceeding in respect of which indemnification could be sought under this Section 6 or 7 (whether or not ▇▇▇▇▇▇▇ ▇▇▇▇▇ or any other indemnified party is an actual or potential party to such claim, action or proceeding), unless such settlement, compromise or consent includes an unconditional release of each indemnified party from all liability arising out of such claim, action or proceeding. The Company shall not have any liability with respect to any settlement, compromise or consent to the entry of any judgment in any pending or threatened claim, action or proceeding entered into or made by ▇▇▇▇▇▇▇ ▇▇▇▇▇ or any other indemnified party in respect of which indemnification or contribution could be sought under this Section 6 or 7 (whether or not ▇▇▇▇▇▇▇ ▇▇▇▇▇ or any other indemnified party is an actual or potential party to such claim, action or proceeding), without the prior written consent of the Company, not to be unreasonably withheld.

If ▇▇▇▇▇▇▇ ▇▇▇▇▇ or any other indemnified party is requested or required to appear as a witness in any action brought by or on behalf of or against the Company in which such party is not named as a defendant, the Company will reimburse ▇▇▇▇▇▇▇ ▇▇▇▇▇ for all expenses incurred in connection with such party’s appearing and preparing to appear as such a witness, including, without limitation, the reasonable fees and disbursements of its legal counsel.

(d) Settlement without Consent if Failure to Reimburse. If at any time an indemnified party shall have requested an indemnifying party to reimburse the indemnified party for fees and expenses of counsel, such indemnifying party agrees that it shall be liable for any settlement of the nature contemplated by Section 6(a)(ii) effected without its written consent if (i) such settlement is entered into more than 45 days after receipt by such indemnifying party of the aforesaid request, (ii) such indemnifying party shall have received notice of the terms of such settlement at least 30 days prior to such settlement being entered into and (iii) such indemnifying party shall not have reimbursed such indemnified party in accordance with such request prior to the date of such settlement.

SECTION

7. Contribution. If the indemnification provided for in Section 6 hereof is for any reason unavailable to or insufficient to hold harmless an indemnified party in respect of any losses, liabilities, claims, damages or expenses referred to therein, then each indemnifying party shall contribute to the aggregate amount of such losses, liabilities, claims, damages and expenses incurred by such indemnified party, as incurred, (i) in such proportion as is appropriate to reflect the relative benefits received by the Company, on the one hand, and the Underwriter, on the other hand, from the offering of the Securities pursuant to this Agreement or (ii) if the allocation provided by clause (i) is not permitted by applicable law, in such proportion as is appropriate to reflect not only the relative benefits referred to in clause (i) above but also the relative fault of the Company on the one hand and of the Underwriter on the other hand in connection with the statements or omissions which resulted in such losses, liabilities, claims, damages or expenses, as well as any other relevant equitable considerations.

The relative benefits received by the Company on the one hand and the Underwriter on the other hand in connection with the offering of the Securities pursuant to this Agreement shall be deemed to be in the same respective proportions as (x) the total proceeds from the offering of the Securities pursuant to this Agreement (before deducting expenses) received by the Company and (y) the total underwriting discount received by the Underwriter, in each case as set forth on the cover of the Final Prospectus Supplement, hereof bear to the sum of (x) and (y).

The relative fault of the Company on the one hand and the Underwriter on the other hand shall be determined by reference to, among other things, whether any such untrue or alleged untrue statement of a material fact or omission or alleged omission to state a material fact relates to information supplied by the Company or by the Underwriter and the parties’ relative intent, knowledge, access to information and opportunity to correct or prevent such statement or omission.

The Company and the Underwriter agree that it would not be just and equitable if contribution pursuant to this Section 7 were determined by pro rata allocation or by any other method of allocation which does not take account of the equitable considerations referred to above in this Section 7. The aggregate amount of losses, liabilities, claims, damages and expenses incurred by an indemnified party and referred to above in this Section 7 shall be deemed to include any legal or other expenses reasonably incurred by such indemnified party in investigating, preparing or defending against any litigation, or any investigation or proceeding by any governmental agency or body, commenced or threatened, or any claim whatsoever based upon any such untrue or alleged untrue statement or omission or alleged omission.

Notwithstanding the provisions of this Section 7, the Underwriter shall not be required to contribute any amount in excess of the amount by which the total price at which the Securities underwritten by it and distributed to the public were offered to the public exceeds the amount of any damages which the Underwriter has otherwise been required to pay by reason of any such untrue or alleged untrue statement or omission or alleged omission.

No person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the Act) shall be entitled to contribution from any person who was not guilty of such fraudulent misrepresentation.

For purposes of this Section 7, each person, if any, who controls the Underwriter within the meaning of Section 15 of the Act or Section 20 of the Exchange Act and the Underwriter’s Affiliates and selling agents, shall have the same rights to contribution as the Underwriter, and each director of the Company, each officer of the Company who signed the Registration Statement, and each person, if any, who controls the Company within the meaning of Section 15 of the Act or Section 20 of the Exchange Act shall have the same rights to contribution as the Company.

SECTION

8. Representations and Agreements to Survive Delivery. All representations, warranties, and agreements contained in this Agreement or in certificates of officers of the Company or any of its subsidiaries submitted pursuant hereto shall remain operative and in full force and effect regardless of (i) any investigation made by or on behalf of the Underwriter or its Affiliates or selling agents, and any person controlling the Underwriter, its officers or directors, any person controlling the Company, and (ii) delivery of and payment for the Securities.

SECTION 9. Termination of Agreement.

(a) Termination; General. The Underwriter may terminate this Agreement, by notice to the Company, at any time at or prior to the Closing Time (i) if there has been, since the time of execution of this Agreement or since the respective dates as of which information is given in the Prospectus (exclusive of any supplement thereto) or the General Disclosure Package, any material adverse change in the condition, financial or otherwise, or in the earnings, business affairs or business prospects of the Company and its subsidiaries taken as a whole, whether or not arising in the ordinary course of business, or (ii) if there has occurred any material adverse change in the financial markets in the United States or the international financial markets, any outbreak of hostilities or escalation thereof or other calamity or crisis or any change or development involving a prospective change in national or international political, financial or economic conditions, in each case the effect of which is such as to make it, in the judgment of the Underwriter, impracticable or inadvisable to market the Securities or to enforce contracts for the sale of the Securities, or (iii) if trading in any securities of the Company has been suspended or materially limited by the Commission or the Nasdaq Global Market, or if trading generally on the New York Stock Exchange or in the Nasdaq Global Market has been suspended or materially limited, or minimum or maximum prices for trading have been fixed, or maximum ranges for prices have been required, by any of said exchanges or by such system or by order of the Commission, the National Association of Securities Dealers, Inc. or any other governmental authority, or (iv) a material disruption has occurred in commercial banking or securities settlement or clearance services in the United States or (v) if a banking moratorium has been declared by either Federal or New York authorities. Notice of any termination of this Agreement shall be promptly given to the Company by telecopy or telephone and shall be subsequently confirmed by letter.

(b) Liabilities. If this Agreement is terminated pursuant to this Section, such termination shall be without liability of any party to any other party except as provided in Section 4 hereof, and provided further that Sections 1, 6, 7 and 8 shall survive such termination and remain in full force and effect.

SECTION

10. Notices. All notices and other communications hereunder shall be in writing and shall be deemed to have been duly given if mailed or transmitted by any standard form of telecommunication. Notices to the Underwriter shall be directed to ▇▇▇▇▇▇▇ Lynch, Pierce, ▇▇▇▇▇▇ & ▇▇▇▇▇ Incorporated at 4 World Financial Center, New York, New York 10080, attention of ▇▇▇▇▇ ▇▇▇▇▇▇▇; notices to the Company shall be directed to it at ▇▇▇ ▇▇▇▇▇▇▇ ▇▇▇▇▇, ▇▇▇▇▇▇, ▇▇ ▇▇▇▇▇, attention of Corporate Counsel.

SECTION

11. No Advisory or Fiduciary Relationship. The Company acknowledges and agrees that (i) the purchase and sale of the Securities pursuant to this Agreement, including the determination of the public offering price of the Securities and any related discounts and commissions, is an arm’s-length commercial transaction between the Company, on the one hand, and the Underwriter, on the other hand, (ii) in connection with the offering contemplated hereby and the process leading to such transaction, the Underwriter is and has been acting solely as a principal and is not the agent or fiduciary of the Company or its stockholders, creditors, employees or any other party, (iii) the Underwriter has not assumed or will not assume an advisory or fiduciary responsibility in favor of the Company with respect to the offering contemplated hereby or the process leading thereto (irrespective of whether the Underwriter has advised or is currently advising the Company on other matters) and the Underwriter has no obligation to the Company with respect to the offering contemplated hereby except the obligations expressly set forth in this Agreement, (iv) the Underwriter and its affiliates may be engaged in a broad range of transactions that involve interests that differ from those of the Company and (v) the Underwriter has not provided any legal, accounting, regulatory or tax advice with respect to the offering contemplated hereby and the Company has consulted its own legal, accounting, regulatory and tax advisors to the extent it deemed appropriate.

SECTION

12. Integration. This Agreement supersedes all prior agreements and understandings (whether written or oral) between the Company and the Underwriter, or any of them, with respect to the subject matter hereof.

SECTION

13. Parties. This Agreement shall inure to the benefit of and be binding upon the Underwriter and the Company and their respective successors. Nothing expressed or mentioned in this Agreement is intended or shall be construed to give any person, firm or corporation, other than the Underwriter, and the Company and their respective successors and the controlling persons and officers and directors referred to in Sections 6 and 7 and their heirs and legal representative, any legal or equitable right, remedy or claim under or in respect of this Agreement or any provision herein contained. This Agreement and all conditions and provisions hereof are intended to be for the sole and exclusive benefit of the Underwriter and the Company and their respective successors, and said controlling persons and officers and directors and their heirs and legal representative, and for the benefit of no other person, firm or corporation. No purchaser of Securities from the Underwriter shall be deemed to be a successor by reason merely of such purchase.

SECTION

14. GOVERNING LAW. THIS AGREEMENT (INCLUDING ANY CLAIM OR CONTROVERSY ARISING OUT OF OR RELATING TO THIS AGREEMENT) SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK, WITHOUT GIVING EFFECT TO CONFLICT OF LAWS PRINCIPLES THAT WOULD RESULT IN THE APPLICATION OF ANY LAW OTHER THAN THE LAW OF THE STATE OF NEW YORK.

SECTION

15. TIME. TIME SHALL BE OF THE ESSENCE OF THIS AGREEMENT. EXCEPT AS OTHERWISE SET FORTH HEREIN, SPECIFIED TIMES OF DAY REFER TO NEW YORK CITY TIME.

SECTION

16. Counterparts. This Agreement may be executed (including by facsimile) in any number of counterparts, each of which shall be deemed to be an original, but all such counterparts shall together constitute one and the same Agreement.

SECTION

17. Effect of Headings. The Section headings herein are for convenience only and shall not affect the construction hereof.

[Signature Page Follows]

If the foregoing is in accordance with your understanding of our agreement, please sign and return to the Company a counterpart hereof, whereupon this instrument, along with all counterparts, will become a binding agreement between the Underwriter and the Company in accordance with its terms.


Very truly,

BioMarin Pharmaceutical Inc.

By:		/s/ ▇▇▇▇-▇▇▇▇▇▇ ▇▇▇▇▇▇▇
Name:		▇▇▇▇-▇▇▇▇▇▇ ▇▇▇▇▇▇▇
Title:		Chief Executive Officer


Confirmed as of the date first above mentioned.

▇▇▇▇▇▇▇ ▇▇▇▇▇ & CO.

▇▇▇▇▇▇▇ ▇▇▇▇▇, ▇▇▇▇▇▇, ▇▇▇▇▇▇ & ▇▇▇▇▇
INCORPORATED

By:				/s/ ▇▇▇▇▇ ▇▇▇▇▇▇▇
Name:				▇▇▇▇▇ ▇▇▇▇▇▇▇
Title:				Director

SCHEDULE A


Name of Underwriter	Principal Amount of Initial Securities
▇▇▇▇▇▇▇ ▇▇▇▇▇, ▇▇▇▇▇▇, ▇▇▇▇▇▇ & ▇▇▇▇▇
Incorporated	$	282,500,000

Total	$	282,500,000

Schedule A

SCHEDULE B

$282,500,000

1.875% Senior Subordinated Convertible Notes due 2017

1.	The initial public offering price of the Securities shall be 100% of the principal amount thereof plus accrued interest, if any, from the date of issuance.

2.	The purchase price to be paid by the Underwriter for the Securities shall be 97.5% of the principal amount thereof.

3.	The interest rate on the Securities shall be 1.875% per annum.

4.	The notes are convertible, at the option of the holder, at any time on or prior to maturity into shares of Common Stock at a conversion rate of 49.1171 shares per $1,000 principal amount of Securities (equivalent to a conversion price of approximately $20.36 per share) subject to adjustment.

Schedule B

SCHEDULE C

The Final Term Sheet, accepted for filing with the Commission on April 18, 2007.

Schedule C

SCHEDULE D

Individuals Entering Lock-Ups

1.	▇▇▇▇-▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇, Chief Executive Officer

2.	▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇, Vice President, Chief Financial Officer

3.	▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇, Senior Vice President, Global Commercial Operations

4.	▇▇▇▇▇▇ ▇. ▇▇▇▇▇, Ph.D., Senior Vice President, Technical Operations

5.	▇. ▇▇▇▇ ▇▇▇▇▇, Vice President, General Counsel and Secretary

6.	▇▇▇▇ ▇. ▇▇▇▇▇▇, M.D., Ph.D., Chief Medical Officer

7.	▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇, M.D., Ph.D., Senior Vice President, Clinical Affairs

8.	▇▇▇▇▇▇▇ ▇▇▇▇, Director

9.	▇▇▇▇▇▇ ▇. ▇▇▇▇▇, Ph.D., Director

10.	▇▇▇▇▇▇ ▇▇▇▇▇, ▇▇▇, Director

11.	▇▇▇▇▇▇ ▇▇▇▇▇▇▇, Director

12.	▇▇▇▇ ▇▇▇▇▇, Ph.D., Director

13.	▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇, Director

Schedule D

EXHIBIT A

FORM OF OPINION OF ▇▇▇▇, ▇▇▇▇▇▇▇▇, ▇▇▇▇▇▇▇▇ & ▇▇▇▇▇▇ LLP

COUNSEL TO THE COMPANY

Exhibit A

EXHIBIT B

FORM OF OPINION OF ▇▇▇▇▇, ▇▇▇▇▇▇ & ▇▇▇▇▇▇▇▇, P.C.

SPECIAL REGULATORY COUNSEL TO THE COMPANY

Exhibit B

EXHIBIT C

FORM OF OPINION OF ▇▇▇▇▇▇▇▇, ▇▇▇▇▇▇▇▇ & BORUN LLP

SPECIAL PATENT COUNSEL TO THE COMPANY

Exhibit C

EXHIBIT D

FORM OF LOCK-UP AGREEMENT

Exhibit D

BIOMARIN PHARMACEUTICAL INC. (a Delaware corporation)

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