RT Journal Article SR Electronic T1 Identification of basic metabolites of 4-[4-(p-chlo- robenzoyl)piperidino]-4'-fluorobutyrophenone, an experimental neuroleptic agent. JF Drug Metabolism and Disposition JO Drug Metab Dispos FD American Society for Pharmacology and Experimental Therapeutics SP 562 OP 567 VO 4 IS 6 A1 G A Fusaro A1 D A Garteiz A1 K Y Chan A1 G A Leeson YR 1976 UL http://dmd.aspetjournals.org/content/4/6/562.abstract AB Two metabolites of 4-[4-(p-(chlorobenzoyl)piperidino]-4'-fluorobutyrophenone (RMI 9901) as well as unchanged drug, have been identified in the urine of rats following oral administration of the drug. Analysis of basic urine extracts by combined gas chromatography-mass spectrometry was employed for metabolite identification. N-dealkylation appears to be a major metabolic pathway and results in formation of 4-(p-chlorobenzoyl)piperidine (I). Subsequent oxidation of this metabolite results in the formation of 4-(p-chlorobenzoyl)-2-piperidone (II), and represents rather unusual metabolic pathway for compounds of this chemical class.