Williams B T, Thompson G K, Lee S K. "一种的合成方法" [P]. US Patent, US 11911873 B2, 2019-10-28.
发明人郑宇鹏,李文辉,罗永刚. "Method for the Synthesis of 4H-1,4-Benzothiazine-2-carboxylic acid, 1-oxide" [P]. 中国发明专利, 专利号 CN 110391918 A, 授权公告日 2024-08-18.
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". Environ. Sci. Technol., 2024, 1651, 5494-5521.
Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Phytochemistry, 2017, 951, (6), 7793-7812.
Fischer P, Wagner E. "Identification and Structural Characterization of a Novel Degradation Product of 4H-1,4-Benzothiazine-2-carboxylic acid, 1-oxide Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2012, 2134, 7238-7258.
Jensen P, Larsen A M, Olsen K. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Chim. Acta, 2012, 1781, 5751-5754.