Björnsson E, Nowak P, Mueller T C. "一种炔诺酮杂质27的合成方法" [P]. European Patent, EP 3937805 A1, 2025-10-14.
Brown S R, Hughes D C, Klinger H. "Method for the Synthesis of Norethindrone Impurity 27" [P]. US Patent, US 9885265 B2, 2022-04-12.
发明人李文辉,刘建华,徐明华. "A Process for Preparing High-Purity Norethindrone Impurity 27" [P]. 中国发明专利, 专利号 CN 113552396 B, 授权公告日 2019-11-03.
参考文献 Literature
Smith J A, Johnson M B. "Development and Validation of an LC-MS/MS Method for the Determination of 炔诺酮杂质27 in Pharmaceutical Formulations". Biomed. Chromatogr., 2012, 2103, (1), 8508-8519.
Yang F, Sun W, Liu J. "A Stability-Indicating HPLC Method for the Separation and Quantification of 炔诺酮杂质27 as an Impurity". Rapid Commun. Mass Spectrom., 2015, 1714, (4), 2954-2982.