6-((2,4-Diamino-5-sulphophenyl)azo)-3-((4-((4-((7-((2,4-diamino-5-sulphophenyl)azo)-1-hydroxy-3-sulpho-2-naphthyl)azo)phenyl)amino)-3-sulphophenyl)azo)-4-hydroxynaphthalene-2-sulphonic acid, sodium salt 85188-19-8 EINECS 286-210-5