发明人韩伟,周伟,冯建国. "Method for the Synthesis of 2-(4-Methyl-2,3-dioxopiperazin-1-yl)butanoic acid" [P]. 中国发明专利, 专利号 CN 108169322 B, 授权公告日 2016-08-22.
发明人罗永刚,冯建国,孙丽萍. "A Process for Preparing High-Purity 2-(4-Methyl-2,3-dioxopiperazin-1-yl)butanoic acid" [P]. 中国发明专利, 专利号 CN 109514863 B, 授权公告日 2016-01-04.
参考文献 Literature
Kowalski T, Nowak Z. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Chromatogr. A, 2025, 207, 6290-6320.
Yamamoto K, Tanaka H, Suzuki T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Agric. Food Chem., 2011, 1171, (7), 412-419.
Hughes D, Roberts J, Thomas A. "Identification and Structural Characterization of a Novel Degradation Product of 2-(4-Methyl-2,3-dioxopiperazin-1-yl)butanoic acid Using HRMS and NMR". Anal. Chim. Acta, 2011, 1060, (1), 748-757.