1-(4-Fluorophenyl)-4-(4-hydroxy-4-phenyl-1-piperidinyl)-1-butanone 4-(4-hydroxy-4-phenyl-1-piperidinyl)-1-(4-fluorophenyl)-1-butanone 4'-Fluoro-4-(4-hydroxy-4-phenylpiperidino)butyrophenone Dechloro Haloperidol (Haloperidol Impurity B) Haloperidol impurity B R 1838 1-(4-fluorophenyl)-4-(4-hydroxy-4-phenyl-1-piperidyl)butan-1-one Dechloro Haloperidol