Davis P L, Williams B T, Chen K W. "一种的合成方法" [P]. US Patent, US 10240200 B2, 2024-08-12.
发明人杨光,郭海燕,刘建华. "Method for the Synthesis of Ursodeoxycholic Acid Impurity 12" [P]. 中国发明专利, 专利号 CN 113991648 A, 授权公告日 2017-09-13.
发明人韩伟,胡光,杨光. "A Process for Preparing High-Purity Ursodeoxycholic Acid Impurity 12" [P]. 中国发明专利, 专利号 CN 114317630 A, 授权公告日 2016-10-12.
参考文献 Literature
Xu M, Hu Y, Zhou D. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Phytochemistry, 2019, 1214, 1553-1583.
Martinez C, Lopez D R. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Environ. Sci. Technol., 2024, 940, 3674-3686.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of Ursodeoxycholic Acid Impurity 12 Using HRMS and NMR". Talanta, 2018, 1993, (6), 5369-5390.
Smith J A, Johnson M B. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Molecules, 2022, 1376, (8), 4095-4113.