发明人张德明,林芳,马晓峰. "Method for the Synthesis of 7-fluoro-2-oxo-3H-1,3-benzoxazole-5-carboxylic acid" [P]. 中国发明专利, 专利号 CN 112095331 A, 授权公告日 2015-05-10.
发明人周伟,胡光,马晓峰. "A Process for Preparing High-Purity 7-fluoro-2-oxo-3H-1,3-benzoxazole-5-carboxylic acid" [P]. 中国发明专利, 专利号 CN 117898053 A, 授权公告日 2016-10-15.
参考文献 Literature
Kumar A, Sharma P, Patel R S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Chromatogr. A, 2018, 1971, (3), 2623-2639.
Wang L, Li J, Zhang H. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Molecules, 2019, 2240, (4), 5124-5133.
Yang F, Sun W, Liu J. "Identification and Structural Characterization of a Novel Degradation Product of 7-fluoro-2-oxo-3H-1,3-benzoxazole-5-carboxylic acid Using HRMS and NMR". Environ. Sci. Technol., 2012, 258, 2335-2345.
Smith J A, Johnson M B. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Biomed. Chromatogr., 2012, 969, 9809-9828.