title: Studies on the application of integrated gas chromatography-mass spectrometry in drug purity control. Impurities in clofibrate, norethindrone, methandienone, haloperidol and meladrazine.
mesh_terms: D002090:Butyrophenones / Q000032:analysis; D002849:Chromatography, Gas; D002994:Clofibrate / Q000032:analysis*; D004340:Drug Contamination; D006220:Haloperidol / Q000032:analysis*; D013058:Mass Spectrometry; D008696:Methandrostenolone / Q000032:analysis*; D009640:Norethindrone / Q000032:analysis*; D013696:Temperature; D014227:Triazines / Q000032:analysis*
chemical_list: D002090:Butyrophenones; D014227:Triazines; C005040:meladrazine; D008696:Methandrostenolone; D002994:Clofibrate; D006220:Haloperidol; D009640:Norethindrone