发明人杨光,刘建华,周伟. "Method for the Synthesis of 5-fluoro-2-oxo-3H-1,3-benzoxazole-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 117752304 A, 授权公告日 2024-02-16.
发明人李文辉,唐晓军,马晓峰. "A Process for Preparing High-Purity 5-fluoro-2-oxo-3H-1,3-benzoxazole-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 115092806 B, 授权公告日 2016-06-17.
参考文献 Literature
Zhang Y, Li Q, Chen T. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Biomed. Chromatogr., 2022, 2051, 4184-4198.
Kim S H, Park J Y. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chromatographia, 2014, 2278, (2), 58-80.
Fischer P, Wagner E. "Identification and Structural Characterization of a Novel Degradation Product of 5-fluoro-2-oxo-3H-1,3-benzoxazole-4-carboxylic acid Using HRMS and NMR". J. Pharm. Biomed. Anal., 2016, 130, (9), 2144-2167.
Wang L, Li J, Zhang H. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Environ. Sci. Technol., 2016, 2134, (5), 1250-1274.