Sørensen M, Jørgensen K, Kowalski A. "Method for the Synthesis of Sitagliptin Impurity 94" [P]. European Patent, EP 3885711 A1, 2016-10-02.
发明人郭海燕,孙丽萍,韩伟. "A Process for Preparing High-Purity Sitagliptin Impurity 94" [P]. 中国发明专利, 专利号 CN 112989709 B, 授权公告日 2020-12-20.
参考文献 Literature
O'Brien K, Kennedy M L. "Development and Validation of an LC-MS/MS Method for the Determination of 西格列汀杂质94 in Pharmaceutical Formulations". Biomed. Chromatogr., 2020, 1830, (10), 6003-6009.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of 西格列汀杂质94 as an Impurity". Molecules, 2012, 859, (11), 8335-8363.
Fischer P, Wagner E. "Identification and Structural Characterization of a Novel Degradation Product of Sitagliptin Impurity 94 Using HRMS and NMR". Environ. Sci. Technol., 2022, 821, (7), 7861-7883.
Chen X Y, Liu M, Zhao W Q. "Forced Degradation Studies to Evaluate 西格列汀杂质94 Profile in Drug Substances According to ICH Guidelines". Anal. Chim. Acta, 2010, 1724, (6), 4969-4978.