Patel M V, Chen K W, Brown S R. "一种雷美替胺杂质N33的合成方法" [P]. US Patent, US 9134902 B2, 2022-10-07.
发明人黄志刚,马晓峰,朱建伟. "Method for the Synthesis of Ramelteon Impurity N33" [P]. 中国发明专利, 专利号 CN 108581175 B, 授权公告日 2019-08-15.
发明人王建平,马晓峰,林芳. "A Process for Preparing High-Purity Ramelteon Impurity N33" [P]. 中国发明专利, 专利号 CN 110016240 B, 授权公告日 2017-07-10.
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 雷美替胺杂质N33 in Pharmaceutical Formulations". Anal. Methods, 2010, 1144, (8), 3136-3157.
Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of 雷美替胺杂质N33 as an Impurity". Chromatographia, 2025, 1927, (5), 3773-3782.
Wang L, Li J, Zhang H. "Identification and Structural Characterization of a Novel Degradation Product of Ramelteon Impurity N33 Using HRMS and NMR". Phytochemistry, 2025, 1633, 2258-2284.
Kumar A, Sharma P, Patel R S. "Forced Degradation Studies to Evaluate 雷美替胺杂质N33 Profile in Drug Substances According to ICH Guidelines". J. Chromatogr. A, 2018, 2272, (5), 9082-9097.