2-Naphthalenesulfonic acid, 7-(acetylamino)-4-hydroxy-3-((6-sulfo-8-((2-(sulfooxy)ethyl)sulfonyl)-2-naphthalenyl)azo)- 68833-99-8 7-Acetamido-4-hydroxy-3-((6-sulpho-8-((2-(sulphooxy)ethyl)sulphonyl)-2-naphthyl)azo)naphthalene-2-sulphonic acid EINECS 272-425-1