1. Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
2. Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, United States
3. MicroEDLab.com, 1623 Central Avenue Suite 18, Cheyenne, Wyoming 82001, United States
4. Drug Substance Technologies - Synthetics, Process Development, Amgen Inc., One Amgen Center Drive, Thousand Oaks, California 91320, United States
5. Medicinal Chemistry, Amgen Inc., One Amgen Center Drive, Thousand Oaks, California 91320, United States