发明人刘建华,周伟,钱学锋. "Method for the Synthesis of 17,20:20,21-Bis(methylenedioxy)pregna-1,4-diene-3,11-dione(Mixture of Diastereomers)" [P]. 中国发明专利, 专利号 CN 116701296 B, 授权公告日 2024-06-20.
参考文献 Literature
Hughes D, Roberts J, Thomas A. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chem., 2018, 1982, 9604-9610.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Sci. Total Environ., 2021, 1460, (11), 4861-4874.
O'Brien K, Kennedy M L. "Identification and Structural Characterization of a Novel Degradation Product of 17,20:20,21-Bis(methylenedioxy)pregna-1,4-diene-3,11-dione(Mixture of Diastereomers) Using HRMS and NMR". Biomed. Chromatogr., 2014, 463, (6), 5386-5389.