title: Pethidine N-oxide: a metabolite in human urine.
mesh_terms: D002849:Chromatography, Gas; D002855:Chromatography, Thin Layer; D006801:Humans; D007273:Injections, Intramuscular; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D008614:Meperidine / Q000378:metabolism / Q000652:urine*; D010084:Oxidation-Reduction; D010087:Oxides / Q000652:urine; D011048:Polarography
chemical_list: D010087:Oxides; D008614:Meperidine