title: Field desorption mass spectrometry of metabolites of the anticancer drug cyclophosphamide.
mesh_terms: D003520:Cyclophosphamide / Q000378:metabolism*; D013058:Mass Spectrometry; D008722:Methods; D008968:Molecular Conformation; D008970:Molecular Weight; D000644:Quaternary Ammonium Compounds; D013696:Temperature
chemical_list: D000644:Quaternary Ammonium Compounds; D003520:Cyclophosphamide