1. Process Chemistry, Pfizer, 445 Eastern Point Road, Groton, Connecticut 06340, United States
2. Department of Chemistry, Imperial College London, Molecular Science Research Hub, 80 Wood Lane, London W12 0BZ, U.K.
3. Process Chemistry, Small Molecule Pharmaceutical Sciences, Genentech Inc., MS232A, 1 DNA Way, South San Francisco, California 94080, United States