Synonyms: Morphinan-3,6-diol,7,8-didehydro-4,5-epoxy-17-(2-propenyl)-, (5a,6a)- (9CI); Morphinan-3,6a-diol, 17-allyl-7,8-didehydro-4,5a-epoxy- (8CI); (-)-Nalorphine; Allorphine; Anarcon;Antorphin; Antorphine; Lethidrone; Letidron; N-Allylnormorphine; NANM; Nallin;Nalline; Nalorphin; Nalorphine; Norfin