4-Acetamido-5-((4-((2-(sulphooxy)ethyl)sulphonyl)phenyl)azo)anthranilic acid, sodium salt 94158-82-4 Benzenesulfonic acid, 4-(acetylamino)-2-amino-5-((4-((2-(sulfooxy)ethyl)sulfonyl)phenyl)azo)-, sodium salt EINECS 303-156-0