Davis P L, Chen K W, Kumar R. "一种的合成方法" [P]. US Patent, US 10975981 B2, 2020-08-04.
发明人孙丽萍,黄志刚,张德明. "Method for the Synthesis of (2S,5S)-1-{[(2S,5S)-2,5-Diethylpyrrolidin-1-yl]methylene}-2,5-diethylpyrrolidinium tetrafluoroborate" [P]. 中国发明专利, 专利号 CN 111539531 B, 授权公告日 2015-12-14.
发明人罗永刚,赵玉洁,高志强. "A Process for Preparing High-Purity (2S,5S)-1-{[(2S,5S)-2,5-Diethylpyrrolidin-1-yl]methylene}-2,5-diethylpyrrolidinium tetrafluoroborate" [P]. 中国发明专利, 专利号 CN 111391231 A, 授权公告日 2016-09-15.
参考文献 Literature
Kim S H, Park J Y. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2010, 1352, 7792-7815.
Jensen P, Larsen A M, Olsen K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Rapid Commun. Mass Spectrom., 2021, 1735, (3), 256-284.
Kumar A, Sharma P, Patel R S. "Identification and Structural Characterization of a Novel Degradation Product of (2S,5S)-1-{[(2S,5S)-2,5-Diethylpyrrolidin-1-yl]methylene}-2,5-diethylpyrrolidinium tetrafluoroborate Using HRMS and NMR". Environ. Sci. Technol., 2010, 1875, 3837-3852.