1,3-Benzodiazole 1,3-Diazaindene 1H-Benzimidazole 3-Azaindole 51-17-2 Azindole BZI Benzimidazole Benziminazole Benzoglyoxaline Benzoimidazole N,N'-Methenyl-o-phenylenediamine NSC 759 NSC759 WLN: T56 BM DNJ o-Benzimidazole