Common use of SIGNATURE PAGE TO SUBSCRIPTION AGREEMENT Clause in Contracts

SIGNATURE PAGE TO SUBSCRIPTION AGREEMENT. Please acknowledge your acceptance of the foregoing Subscription Agreement by signing and returning a copy to the undersigned together with the completed Investor Questionnaire, whereupon this Agreement shall become a binding agreement between us. Your signature below also constitutes your signature to the Investor Questionnaire you have delivered to the Company as of the date indicated below. CHROMADEX CORPORATION a Delaware corporation By: /s/ ▇▇▇▇▇ ▇. ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇. ▇▇▇▇▇▇, ▇▇. Title: President and Chief Executive Officer Dated: April 22, 2010 Name: ▇▇▇▇ ▇. ▇▇▇▇▇ C/F ▇▇▇▇▇ ▇▇▇▇▇ UTMA/FL C/O ▇▇▇▇ ▇. ▇▇▇▇▇ By: /s/ Print Name: Title: (if Applicable) [Authorized Person] Dated (including date of Investor Questionnaire): April 22, 2010 Facsimile: Purchase Price: $37,499.98 Common Shares to be purchased: 267,857 Number of Warrant Shares to be represented by Warrant: 267,857

SIGNATURE PAGE TO SUBSCRIPTION AGREEMENT. Please acknowledge your acceptance of the foregoing Subscription Agreement by signing and returning a copy to the undersigned together with the completed Investor Questionnaire, whereupon this Agreement shall become a binding agreement between us. Your signature below also constitutes your signature to the Investor Questionnaire you have delivered to the Company as of the date indicated below. CHROMADEX CORPORATION a Delaware corporation By: /s/ ▇▇▇▇▇ ▇. ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇. ▇▇▇▇▇▇, ▇▇. Title: President and Chief Executive Officer Dated: April 22, 2010 Name: ▇▇▇▇ ▇. ▇▇▇▇▇ C/F ▇▇▇▇▇▇▇ ▇▇▇▇▇ UTMA/FL C/O ▇▇▇▇ ▇. ▇▇▇▇▇ By: /s/ Print Name: Title: (if Applicable) [Authorized Person] Dated (including date of Investor Questionnaire): April 22, 2010 Facsimile: Purchase Price: $37,499.98 Common Shares to be purchased: 267,857 Number of Warrant Shares to be represented by Warrant: 267,857

SIGNATURE PAGE TO SUBSCRIPTION AGREEMENT. Please acknowledge your acceptance of the foregoing Subscription Agreement by signing and returning a copy to the undersigned together with the completed Investor Questionnaire, whereupon this Agreement shall become a binding agreement between us. Your signature below also constitutes your signature to the Investor Questionnaire you have delivered to the Company as of the date indicated below. CHROMADEX CORPORATION a Delaware corporation By: /s/ ▇▇▇▇▇ ▇. ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇. ▇▇▇▇▇▇, ▇▇. Title: President and Chief Executive Officer Dated: April 22, 2010 Name: ▇▇▇▇ ▇. ▇▇▇▇▇ C/F ▇▇▇▇▇▇▇▇ ▇▇▇▇▇ UTMA/FL C/O ▇▇▇▇ ▇. ▇▇▇▇▇ By: /s/ Print Name: Title: (if Applicable) [Authorized Person] Dated (including date of Investor Questionnaire): April 22, 2010 Facsimile: Purchase Price: $37,499.98 74,999.96 Common Shares to be purchased: 267,857 535,714 Number of Warrant Shares to be represented by Warrant: 267,857535,714

SIGNATURE PAGE TO SUBSCRIPTION AGREEMENT. Please acknowledge your acceptance of the foregoing Subscription Agreement by signing and returning a copy to the undersigned together with the completed Investor Questionnaire, whereupon this Agreement shall become a binding agreement between us. Your signature below also constitutes your signature to the Investor Questionnaire you have delivered to the Company as of the date indicated below. CHROMADEX CORPORATION a Delaware corporation By: /s/ ▇▇▇▇▇ ▇. ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇. ▇▇▇▇▇▇, ▇▇. Title: President and Chief Executive Officer Dated: April 22, 2010 Name: ▇▇▇▇ ▇. ▇▇▇▇▇ C/F ▇▇▇▇▇ ▇▇▇▇▇ UTMA/FL C/O ▇▇▇▇ ▇. ▇▇▇▇▇ By: /s/ Print Name: Title: (if Applicable) [Authorized Person] Dated (including date of Investor Questionnaire): April 22, 2010 Facsimile: Purchase Price: $37,499.98 49,999.88 Common Shares to be purchased: 267,857 357,142 Number of Warrant Shares to be represented by Warrant: 267,857357,142