68631-09-4

2-[4-[2-[4-[[2-Methyl-4-(7-sulfo-2H-naphtho[1,2-d]triazol-2-yl)phenyl]azo]-2-sulfophenyl]ethenyl]-3-sulfophenyl]-2H-naphtho[1,2-d]triazole-5,8-disulfonic acid pentasodium salt