发明人李文辉,何建平,朱建伟. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 114206471 A, 授权公告日 2018-09-21.
发明人陈志强,钱学锋,周伟. "Method for the Synthesis of 1-ethyl-1-methyl-4-oxopiperidin-1-ium" [P]. 中国发明专利, 专利号 CN 115307129 B, 授权公告日 2017-07-05.
Stevens L M, Johnson M A, Schröder R. "A Process for Preparing High-Purity 1-ethyl-1-methyl-4-oxopiperidin-1-ium" [P]. US Patent, US 11203314 B2, 2021-11-18.
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". Anal. Chem., 2014, 2145, (10), 7579-7607.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Biomed. Chromatogr., 2017, 482, (11), 2780-2787.
Kowalski T, Nowak Z. "Identification and Structural Characterization of a Novel Degradation Product of 1-ethyl-1-methyl-4-oxopiperidin-1-ium Using HRMS and NMR". Food Chem., 2011, 265, (8), 5275-5304.
Kumar A, Sharma P, Patel R S. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Sci. Total Environ., 2017, 2394, 7191-7199.