Global Research & Development Employment Agreement Re: Peter B. Corr

Exhibit 10(23)

March 1, 2001

Dr. Peter B. Corr
385 Meadow Creek Drive
Ann Arbor, MI 48105

Dear Dr. Corr:

We hope you share in the excitement of the integration of two great organizations ? Pfizer and Warner-Lambert ? and know you are keenly mindful of the challenges and opportunities ahead.

We believe you have demonstrated exceptional skills, talents and judgment and can be a major contributor in Pfizer. Accordingly, we are pleased to confirm your position of Executive Vice President, Pfizer Global Research & Development (PGRD) and President, Worldwide Development, reporting to me. As discussed, you are now a member of the Corporate Management Council and have been elected a Corporate Officer of Pfizer Inc. In this position, you will be required to relocate to the New London, Connecticut area. The timing of that move will be determined in discussions with me.

Commensurate with the responsibilities of this position, we will provide you with a base salary of no less than $600,000 per annum and an annual incentive target award of 50% of base salary, ranging ...