Mueller T, Fischer A B, Schröder R. "一种的合成方法" [P]. US Patent, US 9589390 B2, 2020-11-05.
发明人唐晓军,徐明华,林芳. "Method for the Synthesis of Regorafenib Impurity 21" [P]. 中国发明专利, 专利号 CN 112849962 A, 授权公告日 2021-06-17.
发明人冯建国,朱建伟,郑宇鹏. "A Process for Preparing High-Purity Regorafenib Impurity 21" [P]. 中国发明专利, 专利号 CN 117378284 B, 授权公告日 2019-02-12.
参考文献 Literature
Xu M, Hu Y, Zhou D. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Chromatogr. A, 2022, 728, (10), 3465-3471.
Yamamoto K, Tanaka H, Suzuki T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Talanta, 2011, 1015, 5951-5967.
Zhou X P, Huang L, Wu G. "Identification and Structural Characterization of a Novel Degradation Product of Regorafenib Impurity 21 Using HRMS and NMR". Anal. Methods, 2025, 1770, (9), 5409-5439.