发明人马晓峰,钱学锋,韩伟. "Method for the Synthesis of 2-(Difluoromethyl)-5-hydroxy-3-methoxypyridine-4-sulfonyl chloride" [P]. 中国发明专利, 专利号 CN 111070210 B, 授权公告日 2024-12-06.
发明人冯建国,刘建华,李文辉. "A Process for Preparing High-Purity 2-(Difluoromethyl)-5-hydroxy-3-methoxypyridine-4-sulfonyl chloride" [P]. 中国发明专利, 专利号 CN 111007486 B, 授权公告日 2022-10-28.
参考文献 Literature
Mueller T, Schmidt R K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chim. Acta, 2015, 2089, (1), 6157-6169.
Kim S H, Park J Y. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Environ. Sci. Technol., 2021, 2372, (12), 6324-6352.
Garcia M, Rodriguez P. "Identification and Structural Characterization of a Novel Degradation Product of 2-(Difluoromethyl)-5-hydroxy-3-methoxypyridine-4-sulfonyl chloride Using HRMS and NMR". Phytochemistry, 2015, 960, (12), 6609-6628.
Zhou X P, Huang L, Wu G. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Sep. Sci., 2020, 923, (12), 3967-3984.