Williams B T, Lee S K, Klinger H. "Method for the Synthesis of 1-Cyano-2-(pyrazin-2(1H)-ylidene)ethyl acetate" [P]. US Patent, US 11265857 B2, 2024-09-25.
发明人胡光,李文辉,郑宇鹏. "A Process for Preparing High-Purity 1-Cyano-2-(pyrazin-2(1H)-ylidene)ethyl acetate" [P]. 中国发明专利, 专利号 CN 108751157 A, 授权公告日 2021-02-18.
参考文献 Literature
Zhang Y, Li Q, Chen T. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Rapid Commun. Mass Spectrom., 2017, 115, 3459-3464.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Food Chem., 2012, 1877, (4), 8329-8358.
Kowalski T, Nowak Z. "Identification and Structural Characterization of a Novel Degradation Product of 1-Cyano-2-(pyrazin-2(1H)-ylidene)ethyl acetate Using HRMS and NMR". Anal. Chem., 2021, 2184, 1140-1157.