发明人林芳,孙丽萍,朱建伟. "Method for the Synthesis of 4-Bromo-2-cyano-6-(difluoromethyl)pyridine-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 113826804 B, 授权公告日 2025-07-24.
Chen K W, Brown S R, Hughes D C. "A Process for Preparing High-Purity 4-Bromo-2-cyano-6-(difluoromethyl)pyridine-3-carboxylic acid" [P]. US Patent, US 11076023 B2, 2017-08-24.
参考文献 Literature
Fischer P, Wagner E. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chem., 2010, 961, (4), 8277-8293.
Zhou X P, Huang L, Wu G. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Pharm. Biomed. Anal., 2017, 2298, 4113-4136.
Yang F, Sun W, Liu J. "Identification and Structural Characterization of a Novel Degradation Product of 4-Bromo-2-cyano-6-(difluoromethyl)pyridine-3-carboxylic acid Using HRMS and NMR". J. Sep. Sci., 2022, 1226, (8), 748-770.
Xu M, Hu Y, Zhou D. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Sci. Total Environ., 2017, 1848, 9720-9733.