发明人张德明,罗永刚,冯建国. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 113864208 A, 授权公告日 2016-02-26.
发明人马晓峰,何建平,朱建伟. "Method for the Synthesis of 6-Chloro-4-(difluoromethyl)-5-methylnicotinic acid" [P]. 中国发明专利, 专利号 CN 109558036 B, 授权公告日 2016-12-01.
Nielsen H, Schröder R, Kowalski A. "A Process for Preparing High-Purity 6-Chloro-4-(difluoromethyl)-5-methylnicotinic acid" [P]. European Patent, EP 3424266 A1, 2019-12-13.
参考文献 Literature
Smith J A, Johnson M B. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chemosphere, 2010, 519, (8), 8700-8715.
Martinez C, Lopez D R. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Food Chem., 2014, 2075, (8), 7983-7993.
Zhang Y, Li Q, Chen T. "Identification and Structural Characterization of a Novel Degradation Product of 6-Chloro-4-(difluoromethyl)-5-methylnicotinic acid Using HRMS and NMR". Talanta, 2016, 659, 6642-6656.
Mueller T, Schmidt R K. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Chromatogr. A, 2017, 1165, (9), 3250-3259.