2-Picoline, 4-((4-(dimethylamino)-m-tolyl)azo)-, 1-oxide 4-((4-(Dimethylamino)-m-tolyl)azo)-2-picoline 1-oxide 7347-47-9 N,N-Dimethyl-2-methyl-4-(4'-(2'-methylpyridyl-1'-oxide)azo)aniline