2-((1-Ethyl-1,6-dihydro-2-hydroxy-4-methyl-6-oxo-5-(sulphomethyl)-3-pyridyl)azo)-5-((4-fluoro-6-((3-sulphophenyl)amino)-1,3,5-triazin-2-yl)amino)benzene-1,4-disulphonic acid 85508-11-8 EINECS 287-435-1