Alexander Greenfield possesses extensive experience in the field of medicinal chemistry, having held positions as Principal Research Scientist at Wyeth Research from March 1992 to January 2010, and at Pfizer for a brief tenure in 2009 to January 2010. Currently, Alexander serves as Principal Research Scientist and Chief Scientist at Polysciences, Inc., where responsibilities include multistep organic synthesis, troubleshooting, design and development of Structure-Activity Relationships (SAR), structure-based computer-aided drug design, and lead profile optimization. Academic credentials include a Ph.D. in Organic Chemistry from Московский Государственный Университет им. М.В. Ломоносова (МГУ).
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