1,2-Bis(2-methylphenyl)hydrazine 1,2-Di-o-tolylhydrazine 2,2'-Dimethylhydrazobenzene 617-22-1 Hydrazine, 1,2-bis(2-methylphenyl)- Hydrazine, 1,2-di-o-tolyl- NSC 309 o,o'-Hydrazotoluene