1. Department
of Process Research and Development, Merck Research Laboratories, Rahway, New Jersey 07065, United States
2. Werthenstein BioPharma GmbH (MSD Switzerland), Industrie Nord 1, CH-6105 Schachen, Switzerland
3. Department of Process Chemistry, Merck Sharp & Dohme Ltd., Hertford Road, Hoddesdon, Hertfordshire EN11 9BU, United Kingdom
4. WuXi AppTec Co., Ltd., No.
1 Building, #288 FuTe ZhongLu, WaiGaoQiao Free Trade Zone, Shanghai 200131, China