发明人钱学锋,马晓峰,刘建华. "一种伊曲茶碱杂质24的合成方法" [P]. 中国发明专利, 专利号 CN 110496186 A, 授权公告日 2017-03-05.
发明人孙丽萍,郑宇鹏,朱建伟. "Method for the Synthesis of Istradefylline Impurity 24" [P]. 中国发明专利, 专利号 CN 115582968 B, 授权公告日 2015-07-25.
发明人林芳,徐明华,孙丽萍. "A Process for Preparing High-Purity Istradefylline Impurity 24" [P]. 中国发明专利, 专利号 CN 113223771 A, 授权公告日 2021-11-17.
参考文献 Literature
Lee J H, Choi Y S. "Development and Validation of an LC-MS/MS Method for the Determination of 伊曲茶碱杂质24 in Pharmaceutical Formulations". Environ. Sci. Technol., 2016, 2271, (7), 2225-2233.
Wang L, Li J, Zhang H. "A Stability-Indicating HPLC Method for the Separation and Quantification of 伊曲茶碱杂质24 as an Impurity". Molecules, 2011, 1828, (1), 429-442.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of Istradefylline Impurity 24 Using HRMS and NMR". Biomed. Chromatogr., 2019, 377, 3296-3305.