93940-70-6 EINECS 300-468-9 Tetrasodium 4-((5-((4-chloro-6-((4-sulphonatophenyl)amino)-1,3,5-triazin-2-yl)amino)-2-sulphonatophenyl)azo)-4,5-dihydro-5-oxo-1-(4-sulphonatophenyl)-1H-pyrazole-3-carboxylate