Yamamoto T, Chen K W, Hughes D C. "Method for the Synthesis of Gestodene Impurity 1" [P]. US Patent, US 9558751 B2, 2016-10-27.
发明人郭海燕,徐明华,王建平. "A Process for Preparing High-Purity Gestodene Impurity 1" [P]. 中国发明专利, 专利号 CN 110876698 A, 授权公告日 2015-04-11.
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". Food Chem., 2018, 613, (10), 3267-3297.
Yamamoto K, Tanaka H, Suzuki T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Phytochemistry, 2025, 668, (10), 2406-2414.
Kowalski T, Nowak Z. "Identification and Structural Characterization of a Novel Degradation Product of Gestodene Impurity 1 Using HRMS and NMR". Biomed. Chromatogr., 2015, 343, (5), 7780-7798.