Björnsson E, Martínez F, Jørgensen K. "一种西格列汀杂质135的合成方法" [P]. European Patent, EP 3062815 A1, 2017-09-24.
发明人高志强,张德明,冯建国. "Method for the Synthesis of Sitagliptin Impurity 135" [P]. 中国发明专利, 专利号 CN 115751367 A, 授权公告日 2017-08-15.
Schröder R, Martínez F, Nowak P. "A Process for Preparing High-Purity Sitagliptin Impurity 135" [P]. European Patent, EP 3522293 A1, 2020-01-01.
参考文献 Literature
Zhang Y, Li Q, Chen T. "Development and Validation of an LC-MS/MS Method for the Determination of 西格列汀杂质135 in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2019, 454, (5), 8476-8504.
Jensen P, Larsen A M, Olsen K. "A Stability-Indicating HPLC Method for the Separation and Quantification of 西格列汀杂质135 as an Impurity". Anal. Methods, 2020, 2121, (9), 7776-7788.
Yamamoto K, Tanaka H, Suzuki T. "Identification and Structural Characterization of a Novel Degradation Product of Sitagliptin Impurity 135 Using HRMS and NMR". Anal. Chim. Acta, 2017, 746, (10), 5987-5991.
Zhou X P, Huang L, Wu G. "Forced Degradation Studies to Evaluate 西格列汀杂质135 Profile in Drug Substances According to ICH Guidelines". Biomed. Chromatogr., 2020, 691, (2), 2740-2743.