发明人朱建伟,刘建华,杨光. "Method for the Synthesis of (3Z)-3-[2-Oxo-2-(thiophen-2-yl)ethylidene]piperazin-2-one" [P]. 中国发明专利, 专利号 CN 108269226 B, 授权公告日 2022-01-14.
Mueller T C, Jørgensen K, Rossi M. "A Process for Preparing High-Purity (3Z)-3-[2-Oxo-2-(thiophen-2-yl)ethylidene]piperazin-2-one" [P]. European Patent, EP 3070672 A1, 2024-07-26.
参考文献 Literature
O'Brien K, Kennedy M L. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Sci. Total Environ., 2025, 1309, (8), 6670-6693.
Yang F, Sun W, Liu J. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Talanta, 2019, 1213, (4), 7184-7190.
Kowalski T, Nowak Z. "Identification and Structural Characterization of a Novel Degradation Product of (3Z)-3-[2-Oxo-2-(thiophen-2-yl)ethylidene]piperazin-2-one Using HRMS and NMR". J. Sep. Sci., 2017, 399, 7489-7509.
Kumar A, Sharma P, Patel R S. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Phytochemistry, 2023, 1408, 9672-9675.