发明人郑宇鹏,唐晓军,陈志强. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 115887057 A, 授权公告日 2023-10-11.
发明人朱建伟,林芳,何建平. "Method for the Synthesis of Ethyl 2-((1-(4-ethyl-6-oxo-1,6-dihydropyrimidin-2-yl)-3-methyl-1H-pyrazol-5-yl)amino)-2-oxoacetate" [P]. 中国发明专利, 专利号 CN 117177957 B, 授权公告日 2016-02-20.
Mueller T C, Nowak P, Schröder R. "A Process for Preparing High-Purity Ethyl 2-((1-(4-ethyl-6-oxo-1,6-dihydropyrimidin-2-yl)-3-methyl-1H-pyrazol-5-yl)amino)-2-oxoacetate" [P]. European Patent, EP 3500563 A1, 2022-02-07.
参考文献 Literature
Lee J H, Choi Y S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chemosphere, 2024, 2273, (1), 4108-4116.
Xu M, Hu Y, Zhou D. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Rapid Commun. Mass Spectrom., 2017, 372, (9), 5916-5921.
Hughes D, Roberts J, Thomas A. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 2-((1-(4-ethyl-6-oxo-1,6-dihydropyrimidin-2-yl)-3-methyl-1H-pyrazol-5-yl)amino)-2-oxoacetate Using HRMS and NMR". Molecules, 2022, 1046, (6), 764-774.