2-Amino-5-benzoylbenzimidazole ,its cas register number is 52329-60-9. It also can be called Methanone, (2-amino-1H-benzimidazol-5-yl)phenyl- ; Benzimidazole, 2-amino-5-benzoyl- ; and Ketone, 2-amino-6-benzimidazolyl phenyl .