Johansson L, Nowak P, Martínez F. "一种的合成方法" [P]. European Patent, EP 3954341 A1, 2023-11-11.
Björnsson E, Kowalski A, Nielsen H. "Method for the Synthesis of 5-Methoxypyrazine-2-carboxamide" [P]. European Patent, EP 3573737 A1, 2020-04-02.
发明人张德明,杨光,郑宇鹏. "A Process for Preparing High-Purity 5-Methoxypyrazine-2-carboxamide" [P]. 中国发明专利, 专利号 CN 109024623 B, 授权公告日 2016-04-13.
参考文献 Literature
Kumar A, Sharma P, Patel R S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Methods, 2012, 397, (11), 7570-7592.
Xu M, Hu Y, Zhou D. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Agric. Food Chem., 2024, 1427, (5), 8875-8882.
Kim S H, Park J Y. "Identification and Structural Characterization of a Novel Degradation Product of 5-Methoxypyrazine-2-carboxamide Using HRMS and NMR". Chromatographia, 2012, 2130, 8968-8992.