title: Identification of a major impurity in methamphetamine.
mesh_terms: D002849:Chromatography, Gas; D002855:Chromatography, Thin Layer; D004340:Drug Contamination; D009682:Magnetic Resonance Spectroscopy; D008694:Methamphetamine / Q000592:standards*; D013055:Spectrophotometry, Infrared; D013057:Spectrum Analysis
chemical_list: D008694:Methamphetamine