sodium 6-amino-5-[[2-[(ethylphenylamino)sulphonyl]phenyl]azo]-4-hydroxynaphthalene-2-sulphonate

6-Amino-4-hydroxy-5-[[2-(ethylphenylaminosulfonyl)phenyl]azo]naphthalene-2-sulfonic acid sodium salt

6-Amino-5-[[2-[(ethylphenylamino)sulfonyl]phenyl]azo]-4-hydroxy-2-naphthalenesulfonic acid sodium salt

2-Naphthalenesulfonic acid, 6-amino-5-2-(ethylphenylamino)sulfonylphenylazo-4-hydroxy-, monosodium salt