1,7-Naphthalenedisulfonic acid, 4-(((3-((chloroacetyl)amino)phenoxy)acetyl)amino)-5-hydroxy-6-((2-(4-pentylphenoxy)phenyl)azo)-, disodium salt 70210-04-7 Disodium 4-(((3-((chloroacetyl)amino)phenoxy)acetyl)amino)-5-hydroxy-6-((2-(4-pentylphenoxy)phenyl)azo)naphthalene-1,7-disulphonate EINECS 274-401-6