1. Material & Analytical Sciences, Boehringer-Ingelheim, Ridgefield, Connecticut 06877, United States
2. Department of Chemical Engineering, Rowan University, Glassboro, New Jersey 08028, United States
3. Process Research and Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
4. Chemical Development, Boehringer-Ingelheim, 88397 Biberach, Germany