title: Simultaneous quantitation of morphine, monobutanoylmorphine and dibutanoylmorphine using short capillary column gas chromatography-mass spectrometry.
mesh_terms: D000818:Animals; D001923:Brain Chemistry; D008401:Gas Chromatography-Mass Spectrometry; D008297:Male; D009020:Morphine / Q000032:analysis*; D009022:Morphine Derivatives / Q000032:analysis*; D051381:Rats; D011919:Rats, Inbred Strains
chemical_list: C049827:6-monobutanoylmorphine; D009022:Morphine Derivatives; C041505:3,6-dibutanoylmorphine; D009020:Morphine