disodium 5-[[4-[[4-[(2,8-dihydroxy-6-sulphonatonaphthyl)azo]-o-tolyl]methyl]phenyl]azo]-4,6-dihydroxynaphthalene-2-sulphonate

2-Naphthalenesulfonic acid, 5-4-4-(2,8-dihydroxy-6-sulfo-1-naphthalenyl)azo-2-methylphenylmethylphenylazo-4,6-dihydroxy-, disodium salt

5-[[4-[[4-[[2,8-Dihydroxy-6-[(sodiooxy)sulfonyl]-1-naphthalenyl]azo]-2-methylphenyl]methyl]phenyl]azo]-4,6-dihydroxy-2-naphthalenesulfonic acid sodium salt