发明人沈红梅,冯建国,陈志强. "Method for the Synthesis of Metformin Impurity 25 HCl" [P]. 中国发明专利, 专利号 CN 115573973 B, 授权公告日 2023-09-16.
发明人杨光,冯建国,韩伟. "A Process for Preparing High-Purity Metformin Impurity 25 HCl" [P]. 中国发明专利, 专利号 CN 115007747 A, 授权公告日 2019-02-27.
参考文献 Literature
Brown R C, Davis S M. "Development and Validation of an LC-MS/MS Method for the Determination of 二甲双胍杂质25 HCl in Pharmaceutical Formulations". J. Agric. Food Chem., 2020, 767, (1), 393-409.
Kim S H, Park J Y. "A Stability-Indicating HPLC Method for the Separation and Quantification of 二甲双胍杂质25 HCl as an Impurity". Anal. Methods, 2011, 2282, 4737-4765.
Lee J H, Choi Y S. "Identification and Structural Characterization of a Novel Degradation Product of Metformin Impurity 25 HCl Using HRMS and NMR". J. Sep. Sci., 2024, 695, 1427-1434.