Sørensen M, Johansson L, Lefèvre J P. "一种恩替卡韦杂质19的合成方法" [P]. European Patent, EP 3807523 A1, 2015-01-22.
发明人钱学锋,何建平,张德明. "Method for the Synthesis of Entecavir Impurity 19" [P]. 中国发明专利, 专利号 CN 113943297 A, 授权公告日 2020-01-11.
发明人罗永刚,韩伟,刘建华. "A Process for Preparing High-Purity Entecavir Impurity 19" [P]. 中国发明专利, 专利号 CN 113406904 B, 授权公告日 2022-02-08.
参考文献 Literature
Martinez C, Lopez D R. "Development and Validation of an LC-MS/MS Method for the Determination of 恩替卡韦杂质19 in Pharmaceutical Formulations". J. Nat. Prod., 2012, 1615, (7), 4037-4059.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of 恩替卡韦杂质19 as an Impurity". Anal. Chem., 2020, 1544, (3), 5694-5702.
Xu M, Hu Y, Zhou D. "Identification and Structural Characterization of a Novel Degradation Product of Entecavir Impurity 19 Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2012, 2379, (6), 6685-6708.