title: Mass spectrometric and gas chromatographic properties of pethidine N-oxide.
mesh_terms: D002849:Chromatography, Gas; D013058:Mass Spectrometry; D008614:Meperidine / Q000032:analysis*; D009589:Nitrogen Oxides / Q000032:analysis
chemical_list: D009589:Nitrogen Oxides; D008614:Meperidine