2,7-Naphthalenedisulfonic acid, 4-2,4-dihydroxy-3-(4-methoxyphenyl)azo-5-4-(4-nitro-2-sulfophenyl)aminophenylazophenylazo-5-hydroxy-, trisodium salt

trisodium 4-[[2,4-dihydroxy-3-[(4-methoxyphenyl)azo]-5-[[4-[(4-nitro-2-sulphonatophenyl)amino]phenyl]azo]phenyl]azo]-5-hydroxynaphthalene-2,7-disulphonate

4-[2,4-Dihydroxy-3-(4-methoxyphenylazo)-5-[4-[4-nitro-2-(sodiosulfo)phenylamino]phenylazo]phenylazo]-5-hydroxy-2,7-naphthalenedisulfonic acid disodium salt