Kumar R, Stevens L M, Mueller T. "一种的合成方法" [P]. US Patent, US 10328829 B2, 2019-02-13.
Martínez F, Björnsson E, Nowak P. "Method for the Synthesis of 6-Methoxy-2-oxo-2H-chromene-3-carboxylic acid" [P]. European Patent, EP 3610903 A1, 2024-05-19.
发明人杨光,李文辉,徐明华. "A Process for Preparing High-Purity 6-Methoxy-2-oxo-2H-chromene-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 109596328 B, 授权公告日 2018-02-17.
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". Biomed. Chromatogr., 2012, 2471, 5373-5395.
Zhou X P, Huang L, Wu G. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Sci. Total Environ., 2014, 322, (4), 9172-9187.
Zhang Y, Li Q, Chen T. "Identification and Structural Characterization of a Novel Degradation Product of 6-Methoxy-2-oxo-2H-chromene-3-carboxylic acid Using HRMS and NMR". Molecules, 2012, 658, 1018-1048.
Mueller T, Schmidt R K. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Chromatogr. A, 2017, 2236, (9), 9253-9282.