1H-Benzimidazole, 2-nitro- (9CI) 2-Nitro-1H-benzimidazole 2-Nitrobenzimidazole 5-23-06-00279 (Beilstein Handbook Reference) 5709-67-1 BRN 0957723 Benzimidazole, 2-nitro- CCRIS 3308 NSC 107509