发明人林芳,黄志刚,胡光. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 116229013 A, 授权公告日 2015-05-16.
发明人赵玉洁,孙丽萍,陈志强. "Method for the Synthesis of 3-(4-Chlorophenyl)-6-(2-hydroxyethyl)-2-methyl-7-oxo-4,7-dihydropyrazolo[1,5-a]pyrimidine-5-carboxylic acid" [P]. 中国发明专利, 专利号 CN 112709317 A, 授权公告日 2025-11-23.
参考文献 Literature
Fischer P, Wagner E. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Nat. Prod., 2025, 2055, (3), 8035-8060.
Kumar A, Sharma P, Patel R S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Molecules, 2018, 1518, 3166-3178.
Fischer P, Wagner E. "Identification and Structural Characterization of a Novel Degradation Product of 3-(4-Chlorophenyl)-6-(2-hydroxyethyl)-2-methyl-7-oxo-4,7-dihydropyrazolo[1,5-a]pyrimidine-5-carboxylic acid Using HRMS and NMR". Anal. Chem., 2024, 1722, (12), 739-744.
Jensen P, Larsen A M, Olsen K. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Chim. Acta, 2020, 2025, 71-98.