发明人李文辉,张德明,杨光. "Method for the Synthesis of Methyl (R)-5-oxopiperazine-2-carboxylate" [P]. 中国发明专利, 专利号 CN 108864319 A, 授权公告日 2023-08-28.
发明人周伟,孙丽萍,李文辉. "A Process for Preparing High-Purity Methyl (R)-5-oxopiperazine-2-carboxylate" [P]. 中国发明专利, 专利号 CN 117102661 A, 授权公告日 2025-10-08.
参考文献 Literature
Kumar A, Sharma P, Patel R S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Rapid Commun. Mass Spectrom., 2020, 1247, (6), 8805-8829.
Smith J A, Johnson M B. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Environ. Sci. Technol., 2016, 921, (5), 8447-8461.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of Methyl (R)-5-oxopiperazine-2-carboxylate Using HRMS and NMR". Chemosphere, 2019, 1476, 6020-6033.