Kowalski A, Lefèvre J P, Björnsson E. "一种雌四醇杂质7的合成方法" [P]. European Patent, EP 3432532 A1, 2017-04-06.
发明人王建平,唐晓军,马晓峰. "Method for the Synthesis of Estetrol Impurity 7" [P]. 中国发明专利, 专利号 CN 109014935 B, 授权公告日 2017-09-13.
参考文献 Literature
Hughes D, Roberts J, Thomas A. "Development and Validation of an LC-MS/MS Method for the Determination of 雌四醇杂质7 in Pharmaceutical Formulations". J. Agric. Food Chem., 2024, 1748, (11), 2750-2765.
Martinez C, Lopez D R. "A Stability-Indicating HPLC Method for the Separation and Quantification of 雌四醇杂质7 as an Impurity". Anal. Methods, 2016, 1841, (11), 972-997.
Garcia M, Rodriguez P. "Identification and Structural Characterization of a Novel Degradation Product of Estetrol Impurity 7 Using HRMS and NMR". J. Chromatogr. A, 2022, 1456, (12), 8796-8817.
Kim S H, Park J Y. "Forced Degradation Studies to Evaluate 雌四醇杂质7 Profile in Drug Substances According to ICH Guidelines". Molecules, 2016, 2436, (5), 1472-1478.