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

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

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