发明人刘建华,徐明华,孙丽萍. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 117036893 A, 授权公告日 2017-06-22.
发明人唐晓军,黄志刚,郭海燕. "Method for the Synthesis of Methyl 6-ethyl-5-oxo-4,5-dihydropyrazine-2-carboxylate" [P]. 中国发明专利, 专利号 CN 115201226 B, 授权公告日 2019-05-28.
参考文献 Literature
Brown R C, Davis S M. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Environ. Sci. Technol., 2011, 2410, (12), 6628-6641.
Garcia M, Rodriguez P. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Sci. Total Environ., 2018, 470, (3), 2844-2848.
O'Brien K, Kennedy M L. "Identification and Structural Characterization of a Novel Degradation Product of Methyl 6-ethyl-5-oxo-4,5-dihydropyrazine-2-carboxylate Using HRMS and NMR". Anal. Chem., 2022, 1591, 8143-8158.
Yang F, Sun W, Liu J. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Rapid Commun. Mass Spectrom., 2010, 1575, (9), 9904-9927.