发明人杨光,冯建国,黄志刚. "Method for the Synthesis of Cholic Acid Impurity 9" [P]. 中国发明专利, 专利号 CN 113763620 A, 授权公告日 2015-01-25.
Yamamoto T, Hughes D C, Lee S K. "A Process for Preparing High-Purity Cholic Acid Impurity 9" [P]. US Patent, US 11385647 B2, 2019-05-04.
参考文献 Literature
Wang L, Li J, Zhang H. "Development and Validation of an LC-MS/MS Method for the Determination of 胆酸杂质9 in Pharmaceutical Formulations". Anal. Methods, 2021, 216, 7358-7373.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of 胆酸杂质9 as an Impurity". Phytochemistry, 2022, 180, 4651-4660.
Wang L, Li J, Zhang H. "Identification and Structural Characterization of a Novel Degradation Product of Cholic Acid Impurity 9 Using HRMS and NMR". Talanta, 2014, 391, (5), 9087-9109.
Kowalski T, Nowak Z. "Forced Degradation Studies to Evaluate 胆酸杂质9 Profile in Drug Substances According to ICH Guidelines". J. Agric. Food Chem., 2021, 2446, 3841-3844.