发明人钱学锋,杨光,赵玉洁. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 108146572 A, 授权公告日 2015-11-12.
发明人王建平,张德明,赵玉洁. "Method for the Synthesis of 5,7-Difluoro-2-oxo-2H-chromene-3-carbonitrile" [P]. 中国发明专利, 专利号 CN 111729733 B, 授权公告日 2022-06-17.
发明人韩伟,马晓峰,唐晓军. "A Process for Preparing High-Purity 5,7-Difluoro-2-oxo-2H-chromene-3-carbonitrile" [P]. 中国发明专利, 专利号 CN 111377097 A, 授权公告日 2019-06-24.
参考文献 Literature
Mueller T, Schmidt R K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Biomed. Chromatogr., 2021, 1059, (12), 5849-5866.
Zhou X P, Huang L, Wu G. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chemosphere, 2016, 1544, (2), 500-512.
Hughes D, Roberts J, Thomas A. "Identification and Structural Characterization of a Novel Degradation Product of 5,7-Difluoro-2-oxo-2H-chromene-3-carbonitrile Using HRMS and NMR". J. Sep. Sci., 2019, 2371, 7658-7685.
O'Brien K, Kennedy M L. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Agric. Food Chem., 2018, 1157, (11), 2881-2892.