Martínez F, Schröder R, Björnsson E. "Method for the Synthesis of N-(3-Ethyl-5-oxo-1H-1,2,4-triazol-4(5H)-yl)furan-2-carboxamide" [P]. European Patent, EP 3429065 A1, 2024-11-01.
发明人黄志刚,张德明,林芳. "A Process for Preparing High-Purity N-(3-Ethyl-5-oxo-1H-1,2,4-triazol-4(5H)-yl)furan-2-carboxamide" [P]. 中国发明专利, 专利号 CN 114300875 A, 授权公告日 2023-08-23.
参考文献 Literature
Chen X Y, Liu M, Zhao W Q. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2021, 237, 3464-3484.
Xu M, Hu Y, Zhou D. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chemosphere, 2018, 290, (3), 2533-2555.
Brown R C, Davis S M. "Identification and Structural Characterization of a Novel Degradation Product of N-(3-Ethyl-5-oxo-1H-1,2,4-triazol-4(5H)-yl)furan-2-carboxamide Using HRMS and NMR". Chromatographia, 2017, 453, 1186-1190.
Chen X Y, Liu M, Zhao W Q. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Chromatogr. A, 2024, 2463, (6), 858-867.