Kumar R, Patel M V, Davis P L. "一种长春西汀杂质44的合成方法" [P]. US Patent, US 10071642 B2, 2017-05-04.
发明人钱学锋,杨光,刘建华. "Method for the Synthesis of Vinpocetine Impurity 44" [P]. 中国发明专利, 专利号 CN 114126054 B, 授权公告日 2015-01-25.
参考文献 Literature
Garcia M, Rodriguez P. "Development and Validation of an LC-MS/MS Method for the Determination of 长春西汀杂质44 in Pharmaceutical Formulations". Anal. Methods, 2017, 1025, 4873-4894.
Mueller T, Schmidt R K. "A Stability-Indicating HPLC Method for the Separation and Quantification of 长春西汀杂质44 as an Impurity". Sci. Total Environ., 2010, 2328, (2), 8535-8560.
Brown R C, Davis S M. "Identification and Structural Characterization of a Novel Degradation Product of Vinpocetine Impurity 44 Using HRMS and NMR". Chemosphere, 2014, 1522, (2), 4676-4701.
Kim S H, Park J Y. "Forced Degradation Studies to Evaluate 长春西汀杂质44 Profile in Drug Substances According to ICH Guidelines". Anal. Chem., 2014, 1149, 9365-9381.