发明人赵玉洁,何建平,罗永刚. "一种左氧氟沙星杂质91的合成方法" [P]. 中国发明专利, 专利号 CN 117101199 A, 授权公告日 2019-08-27.
发明人徐明华,马晓峰,郭海燕. "Method for the Synthesis of Levofloxacin impurity 91" [P]. 中国发明专利, 专利号 CN 114535377 A, 授权公告日 2021-09-14.
Lefèvre J P, Björnsson E, Nowak P. "A Process for Preparing High-Purity Levofloxacin impurity 91" [P]. European Patent, EP 3234751 A1, 2021-05-25.
参考文献 Literature
Garcia M, Rodriguez P. "Development and Validation of an LC-MS/MS Method for the Determination of 左氧氟沙星杂质91 in Pharmaceutical Formulations". Anal. Methods, 2010, 1787, (8), 8778-8804.
Xu M, Hu Y, Zhou D. "A Stability-Indicating HPLC Method for the Separation and Quantification of 左氧氟沙星杂质91 as an Impurity". Phytochemistry, 2011, 1524, (5), 805-822.
O'Brien K, Kennedy M L. "Identification and Structural Characterization of a Novel Degradation Product of Levofloxacin impurity 91 Using HRMS and NMR". J. Chromatogr. A, 2015, 799, (10), 430-447.