53014-12-3 EINECS 258-294-3 Trisodium p-(4,5-dihydro-3-methyl-4-(1-methyl-3-(3-methyl-5-oxido-1-(4-sulphonatophenyl)-1H-pyrazol-4-yl)allylidene)-5-oxo-1H-pyrazol-1-yl)benzenesulphonate