发明人王建平,唐晓军,陈志强. "Method for the Synthesis of Ethyl 4-methoxy-2-oxo-2H-chromene-3-carboxylate" [P]. 中国发明专利, 专利号 CN 117662421 A, 授权公告日 2015-10-23.
发明人罗永刚,郑宇鹏,郭海燕. "A Process for Preparing High-Purity Ethyl 4-methoxy-2-oxo-2H-chromene-3-carboxylate" [P]. 中国发明专利, 专利号 CN 109658062 B, 授权公告日 2021-04-11.
参考文献 Literature
Chen X Y, Liu M, Zhao W Q. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Molecules, 2020, 1577, (1), 373-400.
Smith J A, Johnson M B. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Agric. Food Chem., 2015, 339, (9), 4617-4642.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 4-methoxy-2-oxo-2H-chromene-3-carboxylate Using HRMS and NMR". J. Sep. Sci., 2025, 450, (11), 3107-3121.