| Acros Organics/Thermofisher, Belgium, USA | Anaspec, USA | |
| BASF, Germany | Bayer, Germany | |
| Biocon/Syngene, India | Zydus Cadila | |
| DKSH, Japan | DSM Austria | |
| Eli Lilly & Co., USA | Tocris Cookson, UK | |
| Emcure, India | Exelixis, USA | |
| Interchim, France | Lek/Sandoz, Slovenia/US | |
| Merck, Germany | Nihon, Japan | |
| Novartis, Switzerland | Peptisyntha/Solvay, Belgium/ISA | |
| Pfizer, USA | Polymerlabs, UK. | |
| DSM Austria | Tokyo Chemical Industries, Japan | |
| Schering, Germany | Senn Chemicals, Switzerland | |
| Synthetech, USA | Sigma-Aldrich, USA | |
