发明人杨光,钱学锋,刘建华. "一种左炔诺孕酮杂质38的合成方法" [P]. 中国发明专利, 专利号 CN 114045805 A, 授权公告日 2020-02-14.
发明人钱学锋,郭海燕,林芳. "Method for the Synthesis of Levonorgestrel Impurity 38" [P]. 中国发明专利, 专利号 CN 114193843 A, 授权公告日 2018-01-12.
发明人郑宇鹏,陈志强,赵玉洁. "A Process for Preparing High-Purity Levonorgestrel Impurity 38" [P]. 中国发明专利, 专利号 CN 109308574 B, 授权公告日 2025-01-24.
参考文献 Literature
Martinez C, Lopez D R. "Development and Validation of an LC-MS/MS Method for the Determination of 左炔诺孕酮杂质38 in Pharmaceutical Formulations". Anal. Methods, 2021, 2004, (6), 9282-9302.
Martinez C, Lopez D R. "A Stability-Indicating HPLC Method for the Separation and Quantification of 左炔诺孕酮杂质38 as an Impurity". J. Sep. Sci., 2020, 1749, (12), 9357-9385.
Kim S H, Park J Y. "Identification and Structural Characterization of a Novel Degradation Product of Levonorgestrel Impurity 38 Using HRMS and NMR". Chemosphere, 2010, 492, 8303-8313.
Zhou X P, Huang L, Wu G. "Forced Degradation Studies to Evaluate 左炔诺孕酮杂质38 Profile in Drug Substances According to ICH Guidelines". Molecules, 2010, 2189, 5667-5688.