发明人赵玉洁,张德明,郑宇鹏. "Method for the Synthesis of 2-(Difluoromethyl)-3-fluoro-5-methoxypyridine-6-carboxylic acid" [P]. 中国发明专利, 专利号 CN 113667538 B, 授权公告日 2017-05-09.
发明人郭海燕,罗永刚,周伟. "A Process for Preparing High-Purity 2-(Difluoromethyl)-3-fluoro-5-methoxypyridine-6-carboxylic acid" [P]. 中国发明专利, 专利号 CN 116125592 A, 授权公告日 2015-02-22.
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". Phytochemistry, 2019, 1332, 5882-5911.
Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Pharm. Biomed. Anal., 2022, 1234, 5975-5992.
Kim S H, Park J Y. "Identification and Structural Characterization of a Novel Degradation Product of 2-(Difluoromethyl)-3-fluoro-5-methoxypyridine-6-carboxylic acid Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2014, 2372, (6), 1586-1608.
Jensen P, Larsen A M, Olsen K. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Chem., 2013, 1902, 5241-5245.