97574-43-1 EINECS 307-253-9 Trisodium 4-((5-((4-(4-butylphenoxy)-6-chloro-1,3,5-triazin-2-yl)amino)-2-sulphonatophenyl)azo)-4,5-dihydro-5-oxo-1-(4-sulphonatophenyl)-1H-pyrrole-3-carboxylate