The chemical alpha-MSH has a known molecular formula of C77-H109-N21-O19-S. Synonyms may include: alpha-1-13-Corticotropin, N-acetyl-13-L-valinamide-, alpha-Melanotropin (swine), alpha-Melanotropin (ox), alpha-Melanotropin I (Oncorhynchus keta), alpha-Melanotropin (human), alpha-Melanotropin (Macaca nemestrina), Ba 33761, UNII-OVF025LA77, CZEN 002 (ChemID).