Kumar R, Thompson G K, Johnson M A. "Method for the Synthesis of 6-Methylpyrazine-2-carboxamide" [P]. US Patent, US 9474939 B2, 2023-04-07.
发明人罗永刚,朱建伟,韩伟. "A Process for Preparing High-Purity 6-Methylpyrazine-2-carboxamide" [P]. 中国发明专利, 专利号 CN 116545400 B, 授权公告日 2023-03-28.
参考文献 Literature
Wang L, Li J, Zhang H. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chim. Acta, 2015, 2431, 349-362.
Zhang Y, Li Q, Chen T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Molecules, 2012, 981, 9442-9447.
Hughes D, Roberts J, Thomas A. "Identification and Structural Characterization of a Novel Degradation Product of 6-Methylpyrazine-2-carboxamide Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2011, 1375, (5), 3143-3166.