1-(4'-Oxo-4-(p-fluorophenyl)-n-butyl-1')-4-acetyl-4-(m-methoxyphenyl)-piperidine 1-Butanone, 4-(4-acetyl-4-(3-methoxyphenyl)-1-piperidinyl)-1-(4-fluorophenyl)- 4-(4-Acetyl-4-(3-methoxyphenyl)-1-piperidinyl)-1-(4-fluorophenyl)-1-butanone Butyrophenone, 4-(4-acetyl-4-(m-methoxyphenyl)piperidino)-4'-fluoro- EL6506666