发明人唐晓军,张德明,杨光. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 112799880 A, 授权公告日 2021-04-10.
Nowak P, Johansson L, Nielsen H. "Method for the Synthesis of 6-Hydroxy Levonorgestrel" [P]. European Patent, EP 3280436 A1, 2020-01-14.
Sørensen M, Nielsen H, Jørgensen K. "A Process for Preparing High-Purity 6-Hydroxy Levonorgestrel" [P]. European Patent, EP 3846488 A1, 2015-12-06.
参考文献 Literature
Chen X Y, Liu M, Zhao W Q. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chromatographia, 2014, 1433, (3), 9646-9669.
Martinez C, Lopez D R. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Environ. Sci. Technol., 2020, 1559, (6), 251-259.
Kumar A, Sharma P, Patel R S. "Identification and Structural Characterization of a Novel Degradation Product of 6-Hydroxy Levonorgestrel Using HRMS and NMR". Anal. Chem., 2018, 1842, 4318-4335.
Wang L, Li J, Zhang H. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Pharm. Biomed. Anal., 2019, 1359, (2), 7608-7637.