发明人何建平,冯建国,黄志刚. "Method for the Synthesis of 4-[4-(Ethoxycarbonyl)piperazin-1-yl]-4-oxobutanoic acid" [P]. 中国发明专利, 专利号 CN 117095846 B, 授权公告日 2015-02-09.
Johnson M A, Hughes D C, Roberts E F. "A Process for Preparing High-Purity 4-[4-(Ethoxycarbonyl)piperazin-1-yl]-4-oxobutanoic acid" [P]. US Patent, US 9199114 B2, 2018-07-01.
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. Sep. Sci., 2016, 1934, (9), 263-276.
Mueller T, Schmidt R K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Agric. Food Chem., 2023, 1020, (6), 1542-1556.
Kowalski T, Nowak Z. "Identification and Structural Characterization of a Novel Degradation Product of 4-[4-(Ethoxycarbonyl)piperazin-1-yl]-4-oxobutanoic acid Using HRMS and NMR". Talanta, 2010, 472, (4), 4647-4673.