发明人钱学锋,胡光,冯建国. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 117467974 A, 授权公告日 2021-06-10.
发明人马晓峰,何建平,郭海燕. "Method for the Synthesis of Ethyl 5-(1,1-difluoroethyl)-1H-pyrazole-3-carboxylate" [P]. 中国发明专利, 专利号 CN 117967999 A, 授权公告日 2021-08-05.
参考文献 Literature
Kumar A, Sharma P, Patel R S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Nat. Prod., 2021, 308, (11), 1380-1387.
Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Rapid Commun. Mass Spectrom., 2023, 2268, (6), 2050-2063.
Kowalski T, Nowak Z. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 5-(1,1-difluoroethyl)-1H-pyrazole-3-carboxylate Using HRMS and NMR". Anal. Chem., 2022, 1051, 8859-8877.
Kowalski T, Nowak Z. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Sep. Sci., 2010, 1461, 8447-8472.