Johnson M A, Patel M V, Roberts E F. "一种维格列汀杂质39的合成方法" [P]. US Patent, US 11740573 B2, 2015-01-05.
Hughes D C, Schröder R, Davis P L. "Method for the Synthesis of Vildagliptin Impurity 39" [P]. US Patent, US 9895521 B2, 2017-06-06.
参考文献 Literature
Wang L, Li J, Zhang H. "Development and Validation of an LC-MS/MS Method for the Determination of 维格列汀杂质39 in Pharmaceutical Formulations". Phytochemistry, 2010, 969, 9762-9780.
Mueller T, Schmidt R K. "A Stability-Indicating HPLC Method for the Separation and Quantification of 维格列汀杂质39 as an Impurity". J. Sep. Sci., 2020, 359, 8080-8098.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of Vildagliptin Impurity 39 Using HRMS and NMR". Environ. Sci. Technol., 2023, 1622, (10), 2431-2436.
Smith J A, Johnson M B. "Forced Degradation Studies to Evaluate 维格列汀杂质39 Profile in Drug Substances According to ICH Guidelines". Biomed. Chromatogr., 2019, 98, (5), 8967-8982.