FIRST AMENDMENT TO SECURITIES PURCHASE AGREEMENT THIS FIRST AMENDMENT TO SECURITIES PURCHASE AGREEMENT (this “ Amendment ”), dated as of

SECURITIES PURCHASE AGREEMENT

FIRST AMENDMENT TO SECURITIES PURCHASE AGREEMENT (this

Amendment ), dated as of

May 24, 2017, is entered into by and among ChromaDex Corporation, a

Delaware corporation (the Company ), Champion River

Ventures Limited ( Champion River ) and

Pioneer Step Holdings Limited ( Pioneer Step and

together with Champion River, the Purchasers ). Capitalized

terms used but not defined herein shall have the meanings ascribed

to such terms in the Agreement (as defined below).

Purchasers and the Company are party to that certain Securities

Purchase Agreement, dated as of April 26, 2017 (the

Agreement ), pursuant to

which, among other things, the Company has agreed to issue and sell

to the Purchasers certain equity interests in the Company, on the

terms and subject to the conditions set forth in the

Purchasers and the Company now desire to amend the Agreement in

accordance with Section 5.4 of the Agreement as set forth

NOW, THEREFORE, in consideration of the

mutual covenants and agreements contained herein and other good and

valuable consideration, the receipt and sufficiency of which are

hereby acknowledged, the parties hereto agree as

to Signature Page of Champion River. The signature page of

Champion River is hereby amended to provide for such

Purchaser's applicable Subscription Amount at the Second

Closing and, if applicable, Third Closing, and the number of Second

Closing Shares and, if applicable, Third Closing Shares, issuable

Signature Page of Pioneer Step. The signature page of

Pioneer Step is hereby amended to provide for such

Purchaser's applicable Subscription Amount at the Second

Closing and, if applicable, Third Closing, and the number of Second

Closing Shares and, if applicable, Third Closing Shares, issuable

Except as expressly set forth herein, all terms and provisions

contained in the Agreement shall remain in full force and effect

and are hereby ratified and confirmed. The provisions of this

Amendment shall be binding upon, and shall inure to the benefit of,

the successors and assigns of the Purchasers and the Company,

respectively. This Amendment shall be governed by and construed and

enforced in accordance with the internal laws of the State of New

York. This Amendment may be executed in counterparts, all of which

counterparts collectively shall constitute one agreement, binding

on the parties hereto, notwithstanding that all parties hereto are

not signatories to the same counterpart.

[Signature Page Follows]

IN WITNESS WHEREOF, the parties have

executed this Amendment as of the date first set forth

Chief Executive Officer

[Signature Page to Amendment to Securities Purchase

IN WITNESS WHEREOF, the parties have

executed this Amendment as of the date first set forth

[Signature Page to Amendment to Securities Purchase

IN WITNESS WHEREOF, the parties have

executed this Amendment as of the date first set forth

STEP HOLDINGS LIMITED

Authorized Signatory

[Signature Page to Amendment to Securities Purchase