title: Determination of oxybutynin (4-diethylaminobut-2-ynyl 2-cyclohexyl-2-phenylglycolate) in serum and urine by gas chromatography/mass spectrometry with single ion detection.
mesh_terms: D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D006801:Humans; D008333:Mandelic Acids / Q000032:analysis*; D010276:Parasympatholytics / Q000032:analysis*
chemical_list: D008333:Mandelic Acids; D010276:Parasympatholytics; C005419:oxybutynin