4-{4,5-Dihydro-4-{3-[5-hydroxy-3-methyl-1-(4-sulfonatophenyl)-1H-pyrazol-4- | 3-Methyl-1-(p-potassiosulfophenyl)-4-[3-[5-hydroxy-3-methyl-1-(p-potassiosulfophenyl)-1H-pyrazol-4-yl]-2-propenylidene]-2-pyrazolin-5-one |
dipotassium 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 | 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]benzenesulfonic acid dipotassium salt |