发明人周伟,林芳,徐明华. "Method for the Synthesis of Artemisinin Impurity 4" [P]. 中国发明专利, 专利号 CN 109230516 A, 授权公告日 2020-01-19.
Thompson G K, Brown S R, Davis P L. "A Process for Preparing High-Purity Artemisinin Impurity 4" [P]. US Patent, US 9804829 B2, 2017-06-12.
参考文献 Literature
Garcia M, Rodriguez P. "Development and Validation of an LC-MS/MS Method for the Determination of 青蒿素杂质4 in Pharmaceutical Formulations". Phytochemistry, 2013, 362, 278-302.
Zhang Y, Li Q, Chen T. "A Stability-Indicating HPLC Method for the Separation and Quantification of 青蒿素杂质4 as an Impurity". J. Nat. Prod., 2010, 82, (3), 2023-2029.
Yang F, Sun W, Liu J. "Identification and Structural Characterization of a Novel Degradation Product of Artemisinin Impurity 4 Using HRMS and NMR". Sci. Total Environ., 2011, 2472, (1), 2633-2648.