Synonyms: 2,7-Naphthalenedisulfonic acid, 4-amino-3-(2-(4-(((4-(2-(2,4-diaminophenyl)diazenyl)phenyl)amino)carbonyl)phenyl)diazenyl)-5-hydroxy-6-(2-phenyldiazenyl)-;4-Amino-3-((4-(((4-((2,4-diaminophenyl)azo)phenyl)amino)carbonyl)phenyl)azo)-5-hydroxy-6-(phenylazo)-2,7-naphthalenedisulfonic acid;2,7-Naphthalenedisulfonic acid, 4-amino-3-((4-(((4-((2,4-diaminophenyl)azo)phenyl)amino)carbonyl)phenyl)azo)-5-hydroxy-6-(phenylazo)-;4-Amino-3-((4-(((4-((2,4-diaminophenyl)azo)phenyl)amino)carbonyl)phenyl)azo)-5-hydroxy-6-(phenylazo)naphthalene-2,7-disulphonic acid;(3Z)-5-amino-6-{(E)-[4-({4-[(E)-(2,4-diaminophenyl)diazenyl]phenyl}carbamoyl)phenyl]diazenyl}-4-oxo-3-(phenylhydrazono)-3,4-dihydronaphthalene-2,7-disulfonic acid