发明人陈志强,张德明,马晓峰. "Method for the Synthesis of 1-(2-Methyl-4-sulfophenyl)-5-oxo-4,5-dihydro-1H-pyrazole-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 115392944 B, 授权公告日 2022-06-24.
参考文献 Literature
O'Brien K, Kennedy M L. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Chromatogr. A, 2020, 1936, (12), 2554-2584.
Brown R C, Davis S M. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chemosphere, 2016, 1710, 749-767.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of 1-(2-Methyl-4-sulfophenyl)-5-oxo-4,5-dihydro-1H-pyrazole-3-carboxylic acid Using HRMS and NMR". Anal. Chim. Acta, 2022, 996, 9685-9715.