2,7-Naphthalenedisulfonic acid, 5-amino-3-((4-(5-((8-amino-1-hydroxy-3,6-disulfo-2-naphthalenyl)azo)-1H-benzimidazol-2-yl)phenyl)azo)-4-hydroxy-, sodium salt 5-Amino-3-((4-(5-((8-amino-1-hydroxy-3,6-disulpho-2-naphthyl)azo)-1H-benzimidazol-2-yl)phenyl)azo)-4-hydroxynaphthalene-2,7-disulphonic acid, sodium salt 94133-89-8 EINECS 302-753-3