2,7-Naphthalenedisulfonic acid, 4-amino-3-((4-(((4-((8-amino-1-hydroxy-5-sulfo-2-naphthalenyl)azo)phenyl)amino)carbonyl)phenyl)azo)-5-hydroxy-6-(phenylazo)- 4-Amino-3-((4-(((4-((8-amino-1-hydroxy-5-sulpho-2-naphthyl)azo)phenyl)amino)carbonyl)phenyl)azo)-5-hydroxy-6-(phenylazo)naphthalene-2,7-disulphonic acid 54274-15-6 EINECS 259-059-8