2,7-Naphthalenedisulfonic acid, 4-((4'-((6-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo)-3,3'-dimethoxy(1,1'-biphenyl)-4-yl)azo)-3-hydroxy-, trisodium salt 68084-22-0 EINECS 268-432-4 Trisodium 4-((4'-((6-amino-1-hydroxy-3-sulphonato-2-naphthyl)azo)-3,3'-dimethoxy(1,1'-biphenyl)-4-yl)azo)-3-hydroxynaphthalene-2,7-disulphonate