Mueller T C, Björnsson E, Schröder R. "一种阿哌沙班杂质56的合成方法" [P]. European Patent, EP 3755155 A1, 2022-11-22.
Yamamoto T, Roberts E F, Stevens L M. "Method for the Synthesis of Apixaban Impurity 56" [P]. US Patent, US 9743855 B2, 2023-05-27.
发明人胡光,冯建国,陈志强. "A Process for Preparing High-Purity Apixaban Impurity 56" [P]. 中国发明专利, 专利号 CN 115206846 B, 授权公告日 2020-01-05.
参考文献 Literature
Xu M, Hu Y, Zhou D. "Development and Validation of an LC-MS/MS Method for the Determination of 阿哌沙班杂质56 in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2021, 2031, (2), 7775-7783.
Zhou X P, Huang L, Wu G. "A Stability-Indicating HPLC Method for the Separation and Quantification of 阿哌沙班杂质56 as an Impurity". Talanta, 2017, 2305, (4), 8777-8782.
Wang L, Li J, Zhang H. "Identification and Structural Characterization of a Novel Degradation Product of Apixaban Impurity 56 Using HRMS and NMR". Environ. Sci. Technol., 2019, 99, (3), 1254-1261.