85711-23-5

5-[[2-amino-4-[[4-[2-(4-nitro-2-sulphophenyl)vinyl]-3-sulphophenyl]azoxy]phenyl]azo]naphthalene-1-sulphonic acid

5-[[2-amino-4-[[4-[2-(4-nitro-2-sulphophenyl)vinyl]-3-sulphophenyl]azoxy]phenyl]azo]naphthalene-1-sulphonic acid