发明人孙丽萍,周伟,罗永刚. "Method for the Synthesis of Roxadustat Impurity 20" [P]. 中国发明专利, 专利号 CN 116217493 B, 授权公告日 2017-12-24.
参考文献 Literature
O'Brien K, Kennedy M L. "Development and Validation of an LC-MS/MS Method for the Determination of 罗沙司他杂质20 in Pharmaceutical Formulations". Anal. Methods, 2016, 1821, (10), 6690-6720.
Hughes D, Roberts J, Thomas A. "A Stability-Indicating HPLC Method for the Separation and Quantification of 罗沙司他杂质20 as an Impurity". Phytochemistry, 2024, 1780, (1), 7452-7479.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of Roxadustat Impurity 20 Using HRMS and NMR". Biomed. Chromatogr., 2016, 110, (2), 8939-8953.
Brown R C, Davis S M. "Forced Degradation Studies to Evaluate 罗沙司他杂质20 Profile in Drug Substances According to ICH Guidelines". J. Sep. Sci., 2010, 1879, 206-216.