发明人张德明,朱建伟,孙丽萍. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 117075918 A, 授权公告日 2021-01-17.
发明人王建平,冯建国,马晓峰. "Method for the Synthesis of 2-Difluoromethoxy-3-fluoroisonicotinic acid" [P]. 中国发明专利, 专利号 CN 111494336 A, 授权公告日 2022-03-10.
发明人钱学锋,韩伟,林芳. "A Process for Preparing High-Purity 2-Difluoromethoxy-3-fluoroisonicotinic acid" [P]. 中国发明专利, 专利号 CN 112363415 B, 授权公告日 2021-08-19.
参考文献 Literature
Jensen P, Larsen A M, Olsen K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Sci. Total Environ., 2018, 1231, 7230-7260.
Kumar A, Sharma P, Patel R S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Sep. Sci., 2011, 1450, (2), 7833-7860.
Hughes D, Roberts J, Thomas A. "Identification and Structural Characterization of a Novel Degradation Product of 2-Difluoromethoxy-3-fluoroisonicotinic acid Using HRMS and NMR". J. Chromatogr. A, 2022, 2090, (3), 5926-5929.
Kumar A, Sharma P, Patel R S. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Pharm. Biomed. Anal., 2024, 1164, (12), 9871-9892.