发明人朱建伟,刘建华,林芳. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 110044004 A, 授权公告日 2023-03-10.
发明人张德明,王建平,高志强. "Method for the Synthesis of rel-(2S,5S,Z)-3-(2-Hydroxyethylidene)-7-oxo-4-oxa-1-azabicyclo[3.2.0]heptane-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 114992381 A, 授权公告日 2021-10-18.
发明人孙丽萍,杨光,刘建华. "A Process for Preparing High-Purity rel-(2S,5S,Z)-3-(2-Hydroxyethylidene)-7-oxo-4-oxa-1-azabicyclo[3.2.0]heptane-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 116980522 A, 授权公告日 2017-06-27.
参考文献 Literature
Jensen P, Larsen A M, Olsen K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Chromatogr. A, 2017, 1249, 4814-4821.
Martinez C, Lopez D R. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chemosphere, 2010, 2070, (10), 1792-1813.
Lee J H, Choi Y S. "Identification and Structural Characterization of a Novel Degradation Product of rel-(2S,5S,Z)-3-(2-Hydroxyethylidene)-7-oxo-4-oxa-1-azabicyclo[3.2.0]heptane-2-carboxylic acid Using HRMS and NMR". J. Agric. Food Chem., 2010, 1785, (12), 3081-3085.