139953-78-9 3,5-Dihydro-3-(((4-carboxyphenyl)methylene)amino)-4H-1,2,3-triazino(5,4-b)indol-4-one, methyl ester 4-(((4,5-Dihydro-4-oxo-3H-1,2,3-triazino(5,4-b)indol-3-yl)imino)methyl)benzoic acid methyl ester BRN 5455663 Benzoic acid, 4-(((4,5-dihydro-4-oxo-3H-1,2,3-triazino(5,4-b)indol-3-yl)imino)methyl)-, methyl ester CCRIS 4527