Schröder R, Rossi M, Lefèvre J P. "一种的合成方法" [P]. European Patent, EP 3880389 A1, 2023-04-02.
Stevens L M, Chen K W, Mueller T. "Method for the Synthesis of 19-Norpregn-4-en-20-yn-3-one" [P]. US Patent, US 11268944 B2, 2020-01-09.
发明人杨光,陈志强,唐晓军. "A Process for Preparing High-Purity 19-Norpregn-4-en-20-yn-3-one" [P]. 中国发明专利, 专利号 CN 116544719 A, 授权公告日 2024-12-11.
参考文献 Literature
Brown R C, Davis S M. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Sci. Total Environ., 2024, 2033, 818-847.
Yamamoto K, Tanaka H, Suzuki T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Methods, 2017, 1012, (2), 550-558.
Chen X Y, Liu M, Zhao W Q. "Identification and Structural Characterization of a Novel Degradation Product of 19-Norpregn-4-en-20-yn-3-one Using HRMS and NMR". J. Chromatogr. A, 2023, 164, (6), 6893-6897.