139953-77-8 3,5-Dihydro-3-(((4-carboxyphenyl)methylene)amino)-4H-1,2,3-triazino(5,4-b)indol-4-one 4-(((4,5-Dihydro-4-oxo-3H-1,2,3-triazino(5,4-b)indol-3-yl)imino)methyl)benzoic acid BRN 5453619 Benzoic acid, 4-(((4,5-dihydro-4-oxo-3H-1,2,3-triazino(5,4-b)indol-3-yl)imino)methyl)- CCRIS 4526