发明人郭海燕,何建平,杨光. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 116181998 A, 授权公告日 2021-11-21.
Park J H, Davis P L, Chen K W. "Method for the Synthesis of 5-Methoxy-1-methyl-6-oxo-1,6-dihydropyrazine-2,3-dicarbonitrile" [P]. US Patent, US 11878936 B2, 2015-01-06.
发明人周伟,张德明,唐晓军. "A Process for Preparing High-Purity 5-Methoxy-1-methyl-6-oxo-1,6-dihydropyrazine-2,3-dicarbonitrile" [P]. 中国发明专利, 专利号 CN 116409850 B, 授权公告日 2015-07-25.
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. Agric. Food Chem., 2020, 269, (10), 7468-7493.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chem., 2017, 2276, 888-916.
Zhou X P, Huang L, Wu G. "Identification and Structural Characterization of a Novel Degradation Product of 5-Methoxy-1-methyl-6-oxo-1,6-dihydropyrazine-2,3-dicarbonitrile Using HRMS and NMR". J. Chromatogr. A, 2010, 467, (1), 4808-4827.
Martinez C, Lopez D R. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Chim. Acta, 2015, 299, (9), 3891-3916.