121104-96-9 141117-12-6 (HYDROCHLORIDE) 6-O-Butanoylcastanospermine AIDS-000245 AIDS000245 B-CAST BuCast Butanoic acid, (1S,6S,7S,8R,8aR)-octahydro-1,7,8-trihydroxy-6-indolizinyl ester Celgosivir MDL 28,574 MDL 28,574A MDL 28574