Lee S K, Mueller T, Yamamoto T. "一种的合成方法" [P]. US Patent, US 9842349 B2, 2018-03-24.
Fischer A B, Chen K W, Klinger H. "Method for the Synthesis of N-(4-Ethylphenyl)pyrazine-2-carboxamide" [P]. US Patent, US 9867471 B2, 2021-08-11.
参考文献 Literature
Yang F, Sun W, Liu J. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Methods, 2025, 2051, (9), 1768-1778.
Martinez C, Lopez D R. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Food Chem., 2025, 263, 6539-6555.
Lee J H, Choi Y S. "Identification and Structural Characterization of a Novel Degradation Product of N-(4-Ethylphenyl)pyrazine-2-carboxamide Using HRMS and NMR". Anal. Chim. Acta, 2016, 2149, 4192-4199.
Hughes D, Roberts J, Thomas A. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Agric. Food Chem., 2023, 1107, (2), 1432-1460.