Schröder R, Lee S K, Fischer A B. "一种(E)-4-乙氧基-3-甲基-4-氧代丁-2-烯酸的合成方法" [P]. US Patent, US 9488497 B2, 2020-01-03.
Anderson J P, Stevens L M, Park J H. "Method for the Synthesis of (E)-4-Ethoxy-3-methyl-4-oxobut-2-enoic acid" [P]. US Patent, US 11095874 B2, 2022-11-01.
发明人钱学锋,杨光,徐明华. "A Process for Preparing High-Purity (E)-4-Ethoxy-3-methyl-4-oxobut-2-enoic acid" [P]. 中国发明专利, 专利号 CN 108772560 B, 授权公告日 2017-02-18.
参考文献 Literature
Chen X Y, Liu M, Zhao W Q. "Development and Validation of an LC-MS/MS Method for the Determination of (E)-4-乙氧基-3-甲基-4-氧代丁-2-烯酸 in Pharmaceutical Formulations". Chromatographia, 2012, 2085, (6), 11-27.
Xu M, Hu Y, Zhou D. "A Stability-Indicating HPLC Method for the Separation and Quantification of (E)-4-乙氧基-3-甲基-4-氧代丁-2-烯酸 as an Impurity". J. Nat. Prod., 2011, 1567, 9509-9527.
Xu M, Hu Y, Zhou D. "Identification and Structural Characterization of a Novel Degradation Product of (E)-4-Ethoxy-3-methyl-4-oxobut-2-enoic acid Using HRMS and NMR". Anal. Chem., 2020, 703, (3), 7682-7691.
Martinez C, Lopez D R. "Forced Degradation Studies to Evaluate (E)-4-乙氧基-3-甲基-4-氧代丁-2-烯酸 Profile in Drug Substances According to ICH Guidelines". Food Chem., 2015, 1148, 2917-2920.