Anderson J P, Roberts E F, Mueller T. "一种熊去氧胆酸EP杂质D的合成方法" [P]. US Patent, US 11523878 B2, 2025-06-02.
发明人马晓峰,胡光,张德明. "Method for the Synthesis of Ursodeoxycholic Acid EP Impurity D" [P]. 中国发明专利, 专利号 CN 109972338 B, 授权公告日 2022-05-17.
O'Brien P Q, Roberts E F, Klinger H. "A Process for Preparing High-Purity Ursodeoxycholic Acid EP Impurity D" [P]. US Patent, US 10659183 B2, 2015-08-20.
参考文献 Literature
Zhang Y, Li Q, Chen T. "Development and Validation of an LC-MS/MS Method for the Determination of 熊去氧胆酸EP杂质D in Pharmaceutical Formulations". Molecules, 2015, 703, (4), 7753-7782.
Xu M, Hu Y, Zhou D. "A Stability-Indicating HPLC Method for the Separation and Quantification of 熊去氧胆酸EP杂质D as an Impurity". Anal. Methods, 2024, 1976, 8432-8459.
Zhou X P, Huang L, Wu G. "Identification and Structural Characterization of a Novel Degradation Product of Ursodeoxycholic Acid EP Impurity D Using HRMS and NMR". Chemosphere, 2017, 953, (8), 3676-3699.
Hughes D, Roberts J, Thomas A. "Forced Degradation Studies to Evaluate 熊去氧胆酸EP杂质D Profile in Drug Substances According to ICH Guidelines". Food Chem., 2019, 595, (3), 9700-9707.