发明人钱学锋,郭海燕,黄志刚. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 108398485 A, 授权公告日 2020-03-19.
发明人陈志强,郭海燕,杨光. "Method for the Synthesis of 4-fluoro-3-methyl-2-oxo-1,3-benzoxazole-5-carboxylic acid" [P]. 中国发明专利, 专利号 CN 109171107 A, 授权公告日 2021-02-16.
发明人黄志刚,罗永刚,刘建华. "A Process for Preparing High-Purity 4-fluoro-3-methyl-2-oxo-1,3-benzoxazole-5-carboxylic acid" [P]. 中国发明专利, 专利号 CN 117087526 A, 授权公告日 2025-10-19.
参考文献 Literature
Smith J A, Johnson M B. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Environ. Sci. Technol., 2011, 755, (10), 5454-5463.
Smith J A, Johnson M B. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chromatographia, 2010, 1343, (7), 7816-7832.
Martinez C, Lopez D R. "Identification and Structural Characterization of a Novel Degradation Product of 4-fluoro-3-methyl-2-oxo-1,3-benzoxazole-5-carboxylic acid Using HRMS and NMR". Anal. Chim. Acta, 2012, 2462, 7977-8003.
Martinez C, Lopez D R. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Phytochemistry, 2017, 688, (5), 4396-4414.