3-Methyl-1-(4-sulfophenyl)-2-pyrazolin-5-one

3-Methyl-1-(4-sulfophenyl)-2-pyrazolin-5-one 89-36-1 1-(p-Sulfophenyl)-3-methyl-pyrazolon-(5);_x000D_ 4-(3-methyl-5-oxo-2,5-dihydro-pyrazol-1-yl)-benzenesulfonic acid;_x000D_ Pyrazolic acid;_x000D_ 4-(3-Methyl-5-oxo-2-pyrazolin-1-yl)benzolsulfonsaeure;_x000D_ Benzenesulfonic acid, 4-(4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)-;_x000D_ SPMP;_x000D_ 4-acid pyrazolone;_x000D_ PSMP;_x000D_ p-SMP (1 : 4 SPMP);_x000D_ 1-(4-Sulfophenyl)-3-methyl-5-p;_x000D_ 4-PYRAZOLIC ACID;_x000D_ PYRAZOLINE G;_x000D_ 1-(4-sulfophenyl)-3-methyl-2-pyrazoline-5-one;_x000D_ PHENYLMETHYLPYRAZOLE-4-ACID;_x000D_ PYRAZOLONE G;_x000D_ 4-(3-methyl-5-oxo-4,5-dihydropyrazol-1-yl)benzenesulfonic acid;_x000D_ 4-(4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)-benzenesulfonic acid;