disodium 5-[[4-[ethyl[(3-sulphonatophenyl)methyl]amino]phenyl]azo]-8-(phenylazo)naphthalene-2-sulphonate

5-[4-[N-Ethyl-N-(3-sodiooxysulfonylbenzyl)amino]phenylazo]-8-phenylazo-2-naphthalenesulfonic acid sodium salt

2-Naphthalenesulfonic acid, 5-[[4-[ethyl[(3-sulfophenyl)methyl]amino]phenyl]azo]-8-(phenylazo)-, disodium salt