发明人黄志刚,钱学锋,沈红梅. "Method for the Synthesis of 4-(Difluoromethyl)-1-(2-methylpropyl)-1h-pyrazole-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 114125972 B, 授权公告日 2020-04-17.
发明人高志强,郭海燕,钱学锋. "A Process for Preparing High-Purity 4-(Difluoromethyl)-1-(2-methylpropyl)-1h-pyrazole-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 117173076 A, 授权公告日 2024-09-25.
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. Chromatogr. A, 2011, 1844, (3), 1206-1222.
Jensen P, Larsen A M, Olsen K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Sep. Sci., 2021, 1019, (6), 4039-4049.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of 4-(Difluoromethyl)-1-(2-methylpropyl)-1h-pyrazole-3-carboxylic acid Using HRMS and NMR". J. Pharm. Biomed. Anal., 2014, 249, (3), 6367-6374.
Zhang Y, Li Q, Chen T. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Nat. Prod., 2017, 1408, 7647-7667.