Infinity Pharmaceuticals (INFIQ) 10-Q 2003 Q2 Quarterly report

Exhibit 32.2

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION  906 OF THE SABARNES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Discovery Partners International, Inc. (the “Company”) on Form 10-Q for the period ended June 30, 2003 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Craig Kussman, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to the best of his knowledge:

(1)   The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2)   The information contained in the Report fairly presents, in all material respects, the financial condition of the Company at the end of the period covered by the Report and results of operations of the Company for the period covered by the Report.

/s/Craig Kussman

Craig Kussman

Chief Financial Officer

Date: August 11, 2003