发明人沈红梅,陈志强,郭海燕. "Method for the Synthesis of Tetracaine impurity 20" [P]. 中国发明专利, 专利号 CN 116460064 B, 授权公告日 2018-05-06.
发明人韩伟,郑宇鹏,罗永刚. "A Process for Preparing High-Purity Tetracaine impurity 20" [P]. 中国发明专利, 专利号 CN 110030462 A, 授权公告日 2020-02-08.
参考文献 Literature
Hughes D, Roberts J, Thomas A. "Development and Validation of an LC-MS/MS Method for the Determination of 丁卡因杂质20 in Pharmaceutical Formulations". Talanta, 2012, 243, (12), 9521-9525.
Zhang Y, Li Q, Chen T. "A Stability-Indicating HPLC Method for the Separation and Quantification of 丁卡因杂质20 as an Impurity". Anal. Methods, 2012, 1518, (8), 1589-1610.
Martinez C, Lopez D R. "Identification and Structural Characterization of a Novel Degradation Product of Tetracaine impurity 20 Using HRMS and NMR". Anal. Chem., 2024, 1442, 1040-1068.