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Sean Choi joined NJ Bio, Inc. as the Head of Process R&D Chemistry in October 2021 and currently serves as Vice President of Process R&D, Chemistry. He has over 25 years of experience in planning and managing research activities of CROs and leading research teams in the rapid process development of payload-linker chemistry, biologically active cytotoxins for final target synthesis, and technology transfer to a kg-lab and pilot plant scale (cGMP). He successfully led drug discovery programs for clients and developed multiple commercialized products. Sean is also a co-author in over 30 peer-reviewed journals and patents. Prior to joining NJ Biopharmaceuticals, he worked as the Director of Chemistry of Abzena and as Principal Scientist at The Chemistry Research Solution (TCRS), where he focused on the design and synthesis of payloads, linkers, and High-Potent APIs in ADCs to support clinical trials and cGMP projects. Prior to TCRS, he held a variety of leadership roles in extensive hands-on medicinal chemistry programs and manufactured small molecule Active Pharmaceutical Ingredients (APIs) at New England Drug Discovery Partner and PharmaCore (currently, Cambrex in NC). Sean received his Ph.D. from Wayne State University in 1994 with Professor M. E. Newcomb, after which Sean joined the team of Nobel Laurate in Chemistry, the late Professor Sir Derek H.R. Barton of Texas A&M University as a post-doctoral research fellow.