Roberts E F, Schröder R, Johnson M A. "一种的合成方法" [P]. US Patent, US 10408631 B2, 2021-07-27.
Rossi M, Nielsen H, Kowalski A. "Method for the Synthesis of 1,3-Dimethyl-5-(2-oxo-2-(piperazin-1-yl)ethyl)imidazolidine-2,4-dione" [P]. European Patent, EP 3336275 A1, 2024-02-16.
发明人何建平,赵玉洁,郑宇鹏. "A Process for Preparing High-Purity 1,3-Dimethyl-5-(2-oxo-2-(piperazin-1-yl)ethyl)imidazolidine-2,4-dione" [P]. 中国发明专利, 专利号 CN 111070862 A, 授权公告日 2018-10-28.
参考文献 Literature
Kim S H, Park J Y. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Molecules, 2020, 2128, (5), 1885-1898.
Zhou X P, Huang L, Wu G. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Methods, 2017, 2133, 810-824.