title: The presence of a substance with hydrogen transporting properties in some samples of methotrexate.
mesh_terms: D001565:Benzoates / Q000032:analysis; D055598:Chemical Phenomena; D002621:Chemistry; D002854:Chromatography, Paper; D003124:Colorimetry; D004340:Drug Contamination; D004356:Drug Storage; D005612:Freeze Drying; D006859:Hydrogen; D008727:Methotrexate; D008938:Mitosis / Q000187:drug effects; D009243:NAD; D009249:NADP; D010084:Oxidation-Reduction; D013778:Tetrazolium Salts
chemical_list: D001565:Benzoates; D013778:Tetrazolium Salts; D009243:NAD; D009249:NADP; D006859:Hydrogen; D008727:Methotrexate