Nielsen H, Jørgensen K, Mueller T C. "一种的合成方法" [P]. European Patent, EP 3636892 A1, 2016-03-26.
Roberts E F, Schröder R, Anderson J P. "Method for the Synthesis of 3-ethoxy-1,2-dihydropyrazin-2-one" [P]. US Patent, US 11676034 B2, 2015-04-21.
发明人杨光,高志强,陈志强. "A Process for Preparing High-Purity 3-ethoxy-1,2-dihydropyrazin-2-one" [P]. 中国发明专利, 专利号 CN 108186029 B, 授权公告日 2020-11-03.
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". Anal. Chem., 2017, 1459, (5), 9626-9631.
Zhou X P, Huang L, Wu G. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Molecules, 2017, 1071, (8), 4627-4638.