63870-34-8 Benzenesulfonic acid, 4-(4,5-dihydro-4-(3-(5-hydroxy-3-methyl-1-(4-sulfophenyl)-1H-pyrazol-4-yl)-2-propenylidene)-3-methyl-5-oxo-1H-pyrazol-1-yl)-, disodium salt Disodium p-(4,5-dihydro-4-(3-(5-hydroxy-3-methyl-1-(4-sulphonatophenyl)-1H-pyrazol-4-yl)allylidene)-3-methyl-5-oxo-1H-pyrazol-1-yl)benzenesulphonate EINECS 264-528-5