68616-83-1 7,8-Didehydro-4,5alpha-epoxy-3-hydroxy-17-methyl-14-(pentylamino)morphinan-6-one A-4492 Morphinan-6-one, 7,8-didehydro-4,5-epoxy-3-hydroxy-17-methyl-14-(pentylamino)-, (5alpha)- Pentamorphona [INN-Spanish] Pentamorphone Pentamorphone [USAN:INN] Pentamorphonum [INN-Latin] RX 77989