发明人沈红梅,孙丽萍,徐明华. "Method for the Synthesis of Sitagliptin Impurity 80" [P]. 中国发明专利, 专利号 CN 111659273 B, 授权公告日 2015-02-28.
发明人钱学锋,韩伟,李文辉. "A Process for Preparing High-Purity Sitagliptin Impurity 80" [P]. 中国发明专利, 专利号 CN 117181826 A, 授权公告日 2025-07-19.
参考文献 Literature
Chen X Y, Liu M, Zhao W Q. "Development and Validation of an LC-MS/MS Method for the Determination of Sitagliptin Impurity 80 in Pharmaceutical Formulations". Anal. Chem., 2010, 1537, (1), 5831-5843.
Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of Sitagliptin Impurity 80 as an Impurity". Chemosphere, 2016, 1269, 3275-3281.
Fischer P, Wagner E. "Identification and Structural Characterization of a Novel Degradation Product of Sitagliptin Impurity 80 Using HRMS and NMR". Anal. Chim. Acta, 2014, 121, (4), 3106-3130.
Kowalski T, Nowak Z. "Forced Degradation Studies to Evaluate Sitagliptin Impurity 80 Profile in Drug Substances According to ICH Guidelines". J. Agric. Food Chem., 2014, 851, (11), 6103-6125.