title: Determination of 1,4- and 1,5-benzodiazepines in urine using a computerized gas chromatographic-mass spectrometric technique.
abstract: A method for the determination of benzodiazepines and their main metabolites in urine after acid hydrolysis is described. The extract is analyzed by computerized gas chromatography-mass spectrometry. An on-line computer allows rapid detection using mass fragmentography with the masses m/e 211, 230, 241, 244, 249, 262, 276, and 285. The mass fragmentogram and the underlying mass spectra of the hydrolysis products (benzophenones and analogues) are documented.
mesh_terms: D001569:Benzodiazepines / Q000652:urine*; D003201:Computers; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D006801:Humans; D006868:Hydrolysis; D013329:Structure-Activity Relationship
chemical_list: D001569:Benzodiazepines