2-(3-methyl-5-oxo-1-phenyl-4,5-dihydro-1H-pyrazol-4-yl)-2-sulfopropanoic acid; ; 4,5-Dihydro-?,3-diMethyl-5-oxo-1-phenyl-?-sulfo-1H-pyrazole-4-acetic Acid
2-(3-methyl-5-oxo-1-phenyl-4,5-dihydro-1H-pyrazol-4-yl)-2-sulfopropanoic acid; ; 4,5-Dihydro-?,3-diMethyl-5-oxo-1-phenyl-?-sulfo-1H-pyrazole-4-acetic Acid