Björnsson E, Rossi M, Lefèvre J P. "一种的合成方法" [P]. European Patent, EP 3748274 A1, 2022-02-26.
Lefèvre J P, Martínez F, Johansson L. "Method for the Synthesis of 1-(2,6-Difluorobenzyl)-5-oxopyrrolidine-3-carboxylic acid" [P]. European Patent, EP 3723196 A1, 2017-11-18.
发明人孙丽萍,黄志刚,胡光. "A Process for Preparing High-Purity 1-(2,6-Difluorobenzyl)-5-oxopyrrolidine-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 108895789 A, 授权公告日 2019-06-24.
参考文献 Literature
Kowalski T, Nowak Z. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Chromatogr. A, 2016, 2277, 1500-1513.
Yamamoto K, Tanaka H, Suzuki T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Rapid Commun. Mass Spectrom., 2011, 1324, 8756-8785.
Wang L, Li J, Zhang H. "Identification and Structural Characterization of a Novel Degradation Product of 1-(2,6-Difluorobenzyl)-5-oxopyrrolidine-3-carboxylic acid Using HRMS and NMR". Biomed. Chromatogr., 2013, 1619, (1), 1224-1234.