4-(4-bromophenyl)-2-(3-methyl-5-oxo-1-phenyl-4，5-dihydro-1H-pyrazol-4-yl)-4-oxobutanoic acid

4-(4-bromophenyl)-2-(3-methyl-5-oxo-1-phenyl-4，5-dihydro-1H-pyrazol-4-yl)-4-oxobutanoic acid ≥90%