Rossi M, Sørensen M, Nielsen H. "一种的合成方法" [P]. European Patent, EP 3113359 A1, 2018-04-13.
Kowalski A, Mueller T C, Lefèvre J P. "Method for the Synthesis of 1-(Difluoromethyl)-5-methyl-1H-pyrazole-3-carboxylic acid" [P]. European Patent, EP 3893782 A1, 2021-12-06.
Johnson M A, Patel M V, Schröder R. "A Process for Preparing High-Purity 1-(Difluoromethyl)-5-methyl-1H-pyrazole-3-carboxylic acid" [P]. US Patent, US 9503968 B2, 2025-05-13.
参考文献 Literature
Kim S H, Park J Y. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chim. Acta, 2023, 686, 6927-6937.
Yang F, Sun W, Liu J. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Nat. Prod., 2011, 1944, 6391-6414.
Yamamoto K, Tanaka H, Suzuki T. "Identification and Structural Characterization of a Novel Degradation Product of 1-(Difluoromethyl)-5-methyl-1H-pyrazole-3-carboxylic acid Using HRMS and NMR". Environ. Sci. Technol., 2021, 1439, 7075-7080.
Chen X Y, Liu M, Zhao W Q. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Sci. Total Environ., 2016, 1116, (5), 1431-1436.