发明人周伟,李文辉,黄志刚. "一种西格列汀EP杂质C的合成方法" [P]. 中国发明专利, 专利号 CN 113428282 A, 授权公告日 2024-03-18.
Sørensen M, Rossi M, Björnsson E. "Method for the Synthesis of Sitagliptin EP Impurity C" [P]. European Patent, EP 3512591 A1, 2021-08-05.
Kumar R, Yamamoto T, Williams B T. "A Process for Preparing High-Purity Sitagliptin EP Impurity C" [P]. US Patent, US 10491377 B2, 2021-04-09.
参考文献 Literature
Kowalski T, Nowak Z. "Development and Validation of an LC-MS/MS Method for the Determination of 西格列汀EP杂质C in Pharmaceutical Formulations". J. Agric. Food Chem., 2025, 1287, (11), 9016-9027.
Yamamoto K, Tanaka H, Suzuki T. "A Stability-Indicating HPLC Method for the Separation and Quantification of 西格列汀EP杂质C as an Impurity". Biomed. Chromatogr., 2025, 1128, (12), 269-278.