Björnsson E, Rossi M, Lefèvre J P. "Method for the Synthesis of Methyl 6-amino-5-cyano-3-formylpyrazine-2-carboxylate" [P]. European Patent, EP 3838598 A1, 2023-09-16.
发明人林芳,杨光,周伟. "A Process for Preparing High-Purity Methyl 6-amino-5-cyano-3-formylpyrazine-2-carboxylate" [P]. 中国发明专利, 专利号 CN 110882244 B, 授权公告日 2018-05-27.
参考文献 Literature
Smith J A, Johnson M B. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Sep. Sci., 2025, 564, 9764-9785.
Brown R C, Davis S M. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Talanta, 2014, 720, (5), 6300-6329.
Kumar A, Sharma P, Patel R S. "Identification and Structural Characterization of a Novel Degradation Product of Methyl 6-amino-5-cyano-3-formylpyrazine-2-carboxylate Using HRMS and NMR". Chromatographia, 2013, 1546, 6765-6795.