Exhibit 24
POWER OF ATTORNEY
KNOW ALL MEN BY THESE PRESENTS, that the undersigned hereby constitutes and appoints Thomas C.
Varvaro and Frank L. Jaksch, and each of them, signing singly, the undersigned’s true and lawful
attorney-in-fact to:
(1) execute for and on behalf of the undersigned, in the undersigned’s capacity as an officer,
director or holder of 10% or more of a registered class of securities of ChromaDex Corporation, a
Delaware corporation (the “Company”), any Initial Statement of Beneficial Ownership of Securities
(Form 3), Statement of Changes in Beneficial Ownership (Form 4) and any Annual Statement of Changes
in Beneficial Ownership (Form 5) (including any amendments thereto) in accordance with Section
16(a) of the Securities Exchange Act of 1934 and the rules thereunder;
(2) do and perform any and all acts for and on behalf of the undersigned which may be
necessary or desirable to complete and execute any such Form 3, 4 or 5 and timely file such form
with the United States Securities and Exchange Commission and any stock exchange or similar
authority; and
(3) take any other action of any type whatsoever in connection with the foregoing which, in
the opinion of such attorney-in-fact, may be of benefit to, in the best interest of, or legally
required by, the undersigned, it being understood that the documents executed by such
attorney-in-fact on behalf of the undersigned pursuant to this Power of Attorney shall be in such
form and shall contain such terms and conditions as such attorney-in-fact may approve in such
attorney-in-fact’s discretion.
The undersigned hereby grants to each such attorney-in-fact full power and authority to do and
perform any and every act or thing whatsoever requisite, necessary, or proper to be done in the
exercise of any of the rights and powers herein granted, as fully to all intents and purposes as
the undersigned might or could do if personally present, with full power of substitution or
revocation, hereby ratifying and confirming all that such attorney-in-fact, or such
attorney-in-fact’s substitute or substitutes, shall lawfully do or cause to be done by virtue of
this power of attorney and the rights and powers herein granted. The undersigned acknowledges that
the foregoing attorneys-in-fact, in serving in such capacity at the request of the undersigned, are
not assuming, nor is the Company assuming, any of the undersigned’s responsibilities to comply with
Section 16 of the Securities Exchange Act of 1934.
This Power of Attorney shall remain in full force and effect until the undersigned is no
longer required to file Forms 3, 4, and 5 with respect to the undersigned’s holdings of and
transactions in securities issued by the Company, unless earlier revoked by the undersigned in a
signed writing deliver to the foregoing attorneys-in-fact.
IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed this 25th day of June 2008.