Kowalski A, Rossi M, Nowak P. "一种奥贝胆酸杂质1的合成方法" [P]. European Patent, EP 3919431 A1, 2024-09-08.
Nowak P, Schröder R, Nielsen H. "Method for the Synthesis of Obeticholic Acid Impurity 1" [P]. European Patent, EP 3439341 A1, 2023-01-19.
发明人李文辉,孙丽萍,赵玉洁. "A Process for Preparing High-Purity Obeticholic Acid Impurity 1" [P]. 中国发明专利, 专利号 CN 109565866 A, 授权公告日 2019-07-26.
参考文献 Literature
Smith J A, Johnson M B. "Development and Validation of an LC-MS/MS Method for the Determination of 奥贝胆酸杂质1 in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2013, 1342, (4), 1993-2011.
Xu M, Hu Y, Zhou D. "A Stability-Indicating HPLC Method for the Separation and Quantification of 奥贝胆酸杂质1 as an Impurity". Food Chem., 2018, 223, (8), 3178-3203.
Kowalski T, Nowak Z. "Identification and Structural Characterization of a Novel Degradation Product of Obeticholic Acid Impurity 1 Using HRMS and NMR". Sci. Total Environ., 2010, 1111, 378-399.