发明人朱建伟,陈志强,王建平. "Method for the Synthesis of Saxagliptin Impurity 44" [P]. 中国发明专利, 专利号 CN 115799709 A, 授权公告日 2025-06-15.
Patel M V, Roberts E F, Chen K W. "A Process for Preparing High-Purity Saxagliptin Impurity 44" [P]. US Patent, US 11921450 B2, 2019-11-01.
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 沙格列汀杂质44 in Pharmaceutical Formulations". Anal. Chem., 2018, 364, (4), 736-752.
Yamamoto K, Tanaka H, Suzuki T. "A Stability-Indicating HPLC Method for the Separation and Quantification of 沙格列汀杂质44 as an Impurity". Chromatographia, 2010, 290, 7956-7965.
Kumar A, Sharma P, Patel R S. "Identification and Structural Characterization of a Novel Degradation Product of Saxagliptin Impurity 44 Using HRMS and NMR". Food Chem., 2021, 1647, 7203-7212.
Martinez C, Lopez D R. "Forced Degradation Studies to Evaluate 沙格列汀杂质44 Profile in Drug Substances According to ICH Guidelines". J. Chromatogr. A, 2010, 99, (11), 4308-4325.