2,7-Naphthalenedisulfonic acid, 5-(acetylamino)-4-hydroxy-3-((4-(((3-((2-(sulfooxy)ethyl)sulfonyl)phenyl)amino)carbonyl)phenyl)azo)-, sodium salt 5-(Acetamido)-4-hydroxy-3-((4-(((3-((2-(sulphooxy)ethyl)sulphonyl)phenyl)amino)carbonyl)phenyl)azo)naphthalene-2,7-disulphonic acid,sodium salt 85940-66-5 EINECS 288-954-6