发明人王建平,徐明华,陈志强. "Method for the Synthesis of 5-Chloro-n-ethylpyrazine-2-carboxamide" [P]. 中国发明专利, 专利号 CN 111970971 B, 授权公告日 2016-10-18.
发明人罗永刚,孙丽萍,沈红梅. "A Process for Preparing High-Purity 5-Chloro-n-ethylpyrazine-2-carboxamide" [P]. 中国发明专利, 专利号 CN 109928076 B, 授权公告日 2015-11-06.
参考文献 Literature
Xu M, Hu Y, Zhou D. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Talanta, 2025, 1648, (6), 9775-9794.
Jensen P, Larsen A M, Olsen K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Environ. Sci. Technol., 2016, 540, (12), 4427-4456.
Kumar A, Sharma P, Patel R S. "Identification and Structural Characterization of a Novel Degradation Product of 5-Chloro-n-ethylpyrazine-2-carboxamide Using HRMS and NMR". Phytochemistry, 2014, 2012, (11), 3120-3141.
Zhou X P, Huang L, Wu G. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Biomed. Chromatogr., 2024, 1916, 459-488.