1622-79-3 3575-80-2 4'-Fluor-4-(4-methylpiperidino)butyrophenon 4'-Fluoro-4-(4-methylpiperidino)butyrophenone Bunil MELPERONE Melperona [INN-Spanish] Melperone [BAN:DCF:INN] Melperonum [INN-Latin] Metylperon Metylperonum