Brown S R, O'Brien P Q, Schröder R. "一种非那雄胺杂质34的合成方法" [P]. US Patent, US 9909357 B2, 2020-07-14.
Kowalski A, Sørensen M, Martínez F. "Method for the Synthesis of Finasteride Impurity 34" [P]. European Patent, EP 3443615 A1, 2022-05-04.
发明人张德明,赵玉洁,徐明华. "A Process for Preparing High-Purity Finasteride Impurity 34" [P]. 中国发明专利, 专利号 CN 115091113 A, 授权公告日 2019-05-10.
参考文献 Literature
Hughes D, Roberts J, Thomas A. "Development and Validation of an LC-MS/MS Method for the Determination of 非那雄胺杂质34 in Pharmaceutical Formulations". Food Chem., 2018, 1522, (11), 4929-4947.
Xu M, Hu Y, Zhou D. "A Stability-Indicating HPLC Method for the Separation and Quantification of 非那雄胺杂质34 as an Impurity". Chromatographia, 2020, 943, (11), 9785-9802.
Lee J H, Choi Y S. "Identification and Structural Characterization of a Novel Degradation Product of Finasteride Impurity 34 Using HRMS and NMR". Chemosphere, 2014, 1846, (8), 6647-6667.