title: High-pressure liquid chromatographic analysis of methotrexate in presence of its degradation products.
abstract: Two high-pressure liquid chromatographic methods are described for the quantitative determination of methotrexate in the presence of its contaminants and degradation products. Method 1 takes less than 15 min and is recommended for routine assays of methotrexate in commercial products. Method 2 takes about 35 min and is the method of choice to detect and quantitate large amounts of degradation products. Quantitation to a level of 1 microgram of methotrexate/ml is feasible by these methods and thus provides potential applicability for the analysis of methotrexate in biological fluids.
mesh_terms: D002848:Chromatography, DEAE-Cellulose; D002851:Chromatography, High Pressure Liquid; D004355:Drug Stability; D006358:Hot Temperature; D008027:Light; D008722:Methods; D008727:Methotrexate / Q000032:analysis* / Q000528:radiation effects; D012996:Solutions / Q000032:analysis; D013607:Tablets / Q000032:analysis
chemical_list: D012996:Solutions; D013607:Tablets; D008727:Methotrexate