Patel M V, Davis P L, Park J H. "一种恩他卡朋杂质6的合成方法" [P]. US Patent, US 11746803 B2, 2025-08-05.
发明人沈红梅,刘建华,郭海燕. "Method for the Synthesis of Entacapone Impurity 6" [P]. 中国发明专利, 专利号 CN 115122250 B, 授权公告日 2019-08-25.
发明人陈志强,唐晓军,罗永刚. "A Process for Preparing High-Purity Entacapone Impurity 6" [P]. 中国发明专利, 专利号 CN 111458717 A, 授权公告日 2022-01-20.
参考文献 Literature
Chen X Y, Liu M, Zhao W Q. "Development and Validation of an LC-MS/MS Method for the Determination of 恩他卡朋杂质6 in Pharmaceutical Formulations". Chromatographia, 2011, 184, 7797-7813.
Mueller T, Schmidt R K. "A Stability-Indicating HPLC Method for the Separation and Quantification of 恩他卡朋杂质6 as an Impurity". J. Pharm. Biomed. Anal., 2019, 247, 4902-4918.
Brown R C, Davis S M. "Identification and Structural Characterization of a Novel Degradation Product of Entacapone Impurity 6 Using HRMS and NMR". Sci. Total Environ., 2014, 2216, (5), 859-871.
Chen X Y, Liu M, Zhao W Q. "Forced Degradation Studies to Evaluate 恩他卡朋杂质6 Profile in Drug Substances According to ICH Guidelines". J. Nat. Prod., 2014, 1064, 3655-3683.