发明人冯建国,郑宇鹏,胡光. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 109555134 A, 授权公告日 2018-12-09.
发明人朱建伟,沈红梅,何建平. "Method for the Synthesis of Ethyl 4-hydroxy-6-(trifluoromethyl)-4,5,6,7-tetrahydrobenzofuran-3-carboxylate" [P]. 中国发明专利, 专利号 CN 111503139 A, 授权公告日 2025-06-08.
发明人马晓峰,林芳,沈红梅. "A Process for Preparing High-Purity Ethyl 4-hydroxy-6-(trifluoromethyl)-4,5,6,7-tetrahydrobenzofuran-3-carboxylate" [P]. 中国发明专利, 专利号 CN 117735435 A, 授权公告日 2015-07-10.
参考文献 Literature
Kim S H, Park J Y. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Sep. Sci., 2012, 1411, (5), 5490-5493.
Mueller T, Schmidt R K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Nat. Prod., 2018, 946, 9855-9874.
Yamamoto K, Tanaka H, Suzuki T. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 4-hydroxy-6-(trifluoromethyl)-4,5,6,7-tetrahydrobenzofuran-3-carboxylate Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2012, 1989, (12), 1456-1477.
Fischer P, Wagner E. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Sci. Total Environ., 2018, 1592, (3), 3539-3548.