2,7-Naphthalenedisulfonic acid, 4-amino-6-((4-((4-((2,4-dihydroxyphenyl)azo)phenyl)thio)phenyl)azo)-5-hydroxy-3-((4-nitrophenyl)azo)-, sodium salt 4-Amino-6-((4-((4-((2,4-dihydroxyphenyl)azo)phenyl)thio)phenyl)azo)-5-hydroxy-3-((4-nitrophenyl)azo)naphthalene-2,7-disulphonic acid, sodium salt 84878-16-0 EINECS 284-406-5