Patel M V, Davis P L, Chen K W. "一种左乙拉西坦EP杂质G的合成方法" [P]. US Patent, US 10760774 B2, 2020-09-15.
发明人李文辉,林芳,张德明. "Method for the Synthesis of Levetiracetam EP Impurity G" [P]. 中国发明专利, 专利号 CN 108326688 B, 授权公告日 2018-07-23.
Martínez F, Mueller T C, Björnsson E. "A Process for Preparing High-Purity Levetiracetam EP Impurity G" [P]. European Patent, EP 3546125 A1, 2017-08-20.
参考文献 Literature
Hughes D, Roberts J, Thomas A. "Development and Validation of an LC-MS/MS Method for the Determination of 左乙拉西坦EP杂质G in Pharmaceutical Formulations". Food Chem., 2020, 1453, (5), 7901-7926.
Brown R C, Davis S M. "A Stability-Indicating HPLC Method for the Separation and Quantification of 左乙拉西坦EP杂质G as an Impurity". Anal. Methods, 2010, 312, (12), 8705-8717.
Lee J H, Choi Y S. "Identification and Structural Characterization of a Novel Degradation Product of Levetiracetam EP Impurity G Using HRMS and NMR". Molecules, 2021, 1730, 7340-7347.
Yang F, Sun W, Liu J. "Forced Degradation Studies to Evaluate 左乙拉西坦EP杂质G Profile in Drug Substances According to ICH Guidelines". J. Pharm. Biomed. Anal., 2025, 422, (11), 364-376.