Also Called: 1,3-Benzenedicarboxylic acid, 5-[[1-[[(2,3-dihydro-2-oxo- 1H-benzimidazol-5-yl)amino]carbonyl]-2-oxopropyl ]azo]-, dimethyl ester;1,3-Benzenedicarboxylic acid, 5-[[1-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-oxopropyl]azo]-, dimethyl ester;1,3-Benzenedicarboxylic acid, 5-[2-[1-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-oxopropyl]diazenyl]-, 1,3-dimethyl ester