4-((4-Chloro-6-((4-((2-(sulphooxy)ethyl)sulphonyl)phenyl)amino)-1,3,5-triazin-2-yl)amino)-5-hydroxy-6-((2-sulphophenyl)azo)naphthalene-1,7-disulphonic acid, sodium salt 94157-79-6 EINECS 303-046-2