title: Identification of toxic impurities in commercial diphenylamine.
mesh_terms: D000611:Aminobiphenyl Compounds / Q000032:analysis; D000814:Aniline Compounds / Q000032:analysis* / Q000138:chemical synthesis; D002849:Chromatography, Gas; D004159:Diphenylamine / Q000032:analysis*; D004340:Drug Contamination; D013058:Mass Spectrometry; D008722:Methods
chemical_list: D000611:Aminobiphenyl Compounds; D000814:Aniline Compounds; D004159:Diphenylamine