发明人王建平,罗永刚,何建平. "Method for the Synthesis of Entecavir-(S)-Methylethyl Carboxylic Acid" [P]. 中国发明专利, 专利号 CN 117782638 B, 授权公告日 2016-06-06.
Thompson G K, Yamamoto T, Kumar R. "A Process for Preparing High-Purity Entecavir-(S)-Methylethyl Carboxylic Acid" [P]. US Patent, US 10081302 B2, 2019-06-13.
参考文献 Literature
Zhang Y, Li Q, Chen T. "Development and Validation of an LC-MS/MS Method for the Determination of 恩替卡韦(S)-甲基乙基羧酸 in Pharmaceutical Formulations". Talanta, 2021, 1262, (9), 2631-2655.
Zhang Y, Li Q, Chen T. "A Stability-Indicating HPLC Method for the Separation and Quantification of 恩替卡韦(S)-甲基乙基羧酸 as an Impurity". Rapid Commun. Mass Spectrom., 2015, 825, (5), 4199-4206.
O'Brien K, Kennedy M L. "Identification and Structural Characterization of a Novel Degradation Product of Entecavir-(S)-Methylethyl Carboxylic Acid Using HRMS and NMR". J. Pharm. Biomed. Anal., 2010, 378, (3), 4475-4486.
Kowalski T, Nowak Z. "Forced Degradation Studies to Evaluate 恩替卡韦(S)-甲基乙基羧酸 Profile in Drug Substances According to ICH Guidelines". Molecules, 2013, 356, (3), 604-624.