1,2-Dibenzylidenehydrazine 1,4-Diphenylformalazine 588-68-1 Benzalazine Benzaldazin Benzaldazine Benzaldehyde azine Benzaldehyde, (phenylmethylene)hydrazone Benzaldehyde, azine Benzylideneazine Dibenzalazine Dibenzalhydrazine Dibenzylidenehydrazine Eusolex NSC3269