2856-81-7 3162-75-2 4'-Fluor-4-(perhydropyrrolo(1,2-a)pyrazin-2-yl)butyrophenon 4'-Fluoro-4-(hexahydropyrrolo(1,2-a)pyrazin-2(1H)-yl)butyrophenone Azabuperona [INN-Spanish] Azabuperone Azabuperone [INN] Azabuperonum [INN-Latin]