sodium 3-[[4-[(2-ethoxy-5-methylphenyl)azo]-1-naphthyl]azo]benzenesulphonate

Benzenesulfonic acid, 3-4-(2-ethoxy-5-methylphenyl)azo-1-naphthalenylazo-, sodium salt

3-[[4-[(2-Ethoxy-5-methylphenyl)azo]-1-naphthalenyl]azo]benzenesulfonic acid sodium salt