O'Brien P Q, Mueller T, Stevens L M. "一种的合成方法" [P]. US Patent, US 11477821 B2, 2023-06-20.
发明人徐明华,唐晓军,王建平. "Method for the Synthesis of Ursodeoxycholic Acid Impurity 22" [P]. 中国发明专利, 专利号 CN 109653572 A, 授权公告日 2017-05-05.
参考文献 Literature
Martinez C, Lopez D R. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Methods, 2018, 324, 5264-5277.
Wang L, Li J, Zhang H. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Agric. Food Chem., 2023, 513, (2), 2972-3001.
Chen X Y, Liu M, Zhao W Q. "Identification and Structural Characterization of a Novel Degradation Product of Ursodeoxycholic Acid Impurity 22 Using HRMS and NMR". J. Pharm. Biomed. Anal., 2018, 125, (5), 7552-7569.
Xu M, Hu Y, Zhou D. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Talanta, 2018, 1680, (10), 1022-1037.