title: The major metabolite of fentanyl in the horse.
abstract: Fentanyl, a potent, synthetic narcotic analgesic, has reportedly been used to "dope" racehorses. Urine was collected from a horse dosed with 70 mg of [3H]fentanyl, and the primary metabolite, a water-soluble, amphoteric compound, was isolated by high-pressure liquid chromatography and identified by spectroscopic analysis. This metabolite was found to be N-[1-(2-phenethyl-4-piperidinyl)] malonanilinic acid.
mesh_terms: D000818:Animals; D002851:Chromatography, High Pressure Liquid; D005283:Fentanyl / Q000378:metabolism*; D006736:Horses; D008297:Male
chemical_list: D005283:Fentanyl