OMNIBUS AMENDMENT TO NOTE PURCHASE AGREEMENT AND CONVERTIBLE PROMISSORY NOTES This Omnibus Amendment to Note Purchase Agreement and Convertible Promissory Notes (this “ Amendment ”), dated as of

OMNIBUS AMENDMENT TO

NOTE PURCHASE AGREEMENT AND CONVERTIBLE PROMISSORY

Omnibus Amendment to Note Purchase Agreement and Convertible

Promissory Notes (this

dated as of June 30, 2019 (the Effective

Date ), by and among ChromaDex Corporation, a Delaware corporation (the

the note holders identified on the signature pages hereto (the

amends and modifies (i) that certain Note Purchase Agreement, dated

May 9, 2019, by and among the Company and the Holders (as it may be

amended from time to time, the Purchase

Agreement ) and (ii) the Convertible Promissory Notes

issued by the Company to the Holders pursuant to the Purchase

Agreement (the Notes ).

Company and the Holders now wish to amend the Purchase Agreement to

remove the restriction on the Company issuing Common Stock (as

defined in the Purchase Agreement) during the Restricted Period (as

defined in the Purchase Agreement).

Company and the Holders now wish to amend all of the Notes to

extend the Maturity Date (as defined in the Notes) from July 1,

2019 to August 15, 2019.

exchange for other good and valuable consideration, the receipt and

adequacy of which is hereby acknowledged, the parties agree as

1. Amendment to Purchase Agreement. Section

4.8 of the Purchase Agreement is hereby amended and restated in its

entirety as follows:

2. Amendment to Notes. Section 2(a) of each

of the Notes is hereby amended and restated in its entirety as

to conversion as provided for elsewhere in this Note, the entire

unpaid principal amount and all unpaid accrued interest under this

Note shall be due and payable to Holder on August 15, 2019 (the

Maturity Date ). Principal and interest due hereunder

shall be paid in lawful money of the United States of America in

immediately available federal funds or the equivalent. All payments

made hereunder shall first be applied to interest then due and

payable and any excess payment shall then be applied to reduce the

3. Governing Law. This Amendment shall be governed by and construed

under the laws of the State of New York, as applied to agreements

among New York residents, made and to be performed entirely within

the State of New York, without giving effect to conflicts of laws

4. Entire Agreement. This Amendment

constitutes the full and entire understanding among the parties

regarding the subject matter in this Amendment, the Purchase

Agreement and the Notes.

5. Amendment Limited. Other than as set

forth in this Amendment, all of the terms and conditions of the

Purchase Agreement and Notes will continue in full force and

6. Counterparts. This Amendment may be

executed in counterparts, each of which will constitute an

original, but all of which, when taken together, will constitute

[Signature Pages Follow]

In Witness Whereof, the parties have executed this

Amendment to Note Purchase Agreement and Convertible Promissory

Notes as of the Effective Date.

CHROMADEX CORPORATION

In Witness Whereof, the parties have executed this

Amendment to Note Purchase Agreement and Convertible Promissory

Notes as of the Effective Date.

Winsave Resources Limited

In Witness Whereof, the parties have executed this

Amendment to Note Purchase Agreement and Convertible Promissory

Notes as of the Effective Date.

Pioneer Step Holdings Limited