title: Improved methods for quantitative determination of methadone.
mesh_terms: D000818:Animals; D002563:Cerium; D002849:Chromatography, Gas; D002855:Chromatography, Thin Layer; D006801:Humans; D007202:Indicators and Reagents; D008297:Male; D008691:Methadone / Q000032:analysis*; D008722:Methods; D010084:Oxidation-Reduction; D051381:Rats; D012044:Regression Analysis; D013056:Spectrophotometry, Ultraviolet; D013431:Sulfates; D013464:Sulfuric Acids
chemical_list: D007202:Indicators and Reagents; D013431:Sulfates; D013464:Sulfuric Acids; D002563:Cerium; D008691:Methadone