Gregory S. Walker is an Associate Research Fellow at Pfizer Inc. with 30 years of experience in both pharmaceutical science and drug metabolism. He manages the drug metabolism NMR facility at Pfizer's research headquarters in Groton, CT.
For the past 25 years, Mr. Walker has worked in NMR groups at The Upjohn Company, Pharmacia, and Pfizer. He specializes in the structural characterization of low-level, unknown organic molecules originating from complex matrices using a variety of chromatographic and spectroscopic techniques. His career highlights include establishing NMR as a global analytical resource for the Pfizer drug metabolism division, developing a generalized quantitative NMR assay for qualification of bio-generated analytical standards, and 50+ external publications and presentations.
Mr. Walker is a recognized expert in structural elucidation of metabolites and has taught numerous short courses for such organizations as the American Chemical Society, Applied Pharmaceutical Analysis (APA) and International Society for the Study of Xenobiotics (ISSX). He is a two-time recipient of the Pfizer Achievement Award, most recently for his work in quantitative NMR as it pertains to drug metabolism.