Stevens L M, Roberts E F, Kumar R. "一种左乙拉西坦外消旋体的合成方法" [P]. US Patent, US 10507893 B2, 2025-07-08.
发明人朱建伟,林芳,唐晓军. "Method for the Synthesis of Levetiracetam Racemate" [P]. 中国发明专利, 专利号 CN 113834462 A, 授权公告日 2020-06-16.
Lee S K, Stevens L M, O'Brien P Q. "A Process for Preparing High-Purity Levetiracetam Racemate" [P]. US Patent, US 11380963 B2, 2023-04-23.
参考文献 Literature
Kowalski T, Nowak Z. "Development and Validation of an LC-MS/MS Method for the Determination of 左乙拉西坦外消旋体 in Pharmaceutical Formulations". J. Nat. Prod., 2014, 1215, (11), 4235-4245.
Jensen P, Larsen A M, Olsen K. "A Stability-Indicating HPLC Method for the Separation and Quantification of 左乙拉西坦外消旋体 as an Impurity". Sci. Total Environ., 2015, 842, 7151-7170.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of Levetiracetam Racemate Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2020, 1275, (9), 5824-5828.