title: Rapid structure elucidation of drug metabolites by use of stable isotopes.
mesh_terms: D000818:Animals; D002247:Carbon Isotopes; D002855:Chromatography, Thin Layer; D005260:Female; D007553:Isotope Labeling; D013058:Mass Spectrometry; D008660:Metabolism; D008722:Methods; D009025:Morpholines / Q000378:metabolism; D010879:Piperazines / Q000378:metabolism; D011743:Pyrimidines / Q000378:metabolism / Q000652:urine; D011868:Radioisotopes; D051381:Rats
chemical_list: D002247:Carbon Isotopes; D009025:Morpholines; D010879:Piperazines; D011743:Pyrimidines; D011868:Radioisotopes