Thompson G K, Stevens L M, Patel M V. "一种利多卡因杂质N4的合成方法" [P]. US Patent, US 10421246 B2, 2017-01-04.
Jørgensen K, Schröder R, Kowalski A. "Method for the Synthesis of Lidocaine Impurity N4" [P]. European Patent, EP 3654850 A1, 2020-08-14.
发明人孙丽萍,钱学锋,林芳. "A Process for Preparing High-Purity Lidocaine Impurity N4" [P]. 中国发明专利, 专利号 CN 116110012 B, 授权公告日 2017-01-12.
参考文献 Literature
Kowalski T, Nowak Z. "Development and Validation of an LC-MS/MS Method for the Determination of 利多卡因杂质N4 in Pharmaceutical Formulations". Biomed. Chromatogr., 2024, 516, 8322-8336.
Xu M, Hu Y, Zhou D. "A Stability-Indicating HPLC Method for the Separation and Quantification of 利多卡因杂质N4 as an Impurity". Food Chem., 2018, 1139, (4), 1732-1753.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of Lidocaine Impurity N4 Using HRMS and NMR". J. Chromatogr. A, 2025, 711, (12), 6761-6770.