6441-96-9 Benzenesulfonic acid, 3-((8-(acetylamino)-2-hydroxy-1-naphthalenyl)azo)-5-chloro-2-hydroxy-, monosodium salt EINECS 229-233-8 Sodium 3-((8-acetamido-2-hydroxy-1-naphthyl)azo)-5-chloro-2-hydroxybenzenesulphonate