2,7-Naphthalenedisulfonic acid, 5-amino-3-((4-((4-((8-amino-1-hydroxy-3,6-disulfo-2-naphthalenyl)azo)-5-methoxy-2-methylphenyl)azo)phenyl)azo)-4-hydroxy-, tetrasodium salt 72245-59-1 EINECS 276-530-3 Tetrasodium 5-amino-3-((4-((4-((8-amino-1-hydroxy-3,6-disulphonato-2-naphthyl)azo)-5-methoxy-o-tolyl)azo)phenyl)azo)-4-hydroxynaphthalene-2,7-disulphonate