发明人张德明,冯建国,孙丽萍. "Method for the Synthesis of Guanosine Impurity 4 Disodium Salt" [P]. 中国发明专利, 专利号 CN 116977485 A, 授权公告日 2016-01-16.
发明人周伟,马晓峰,韩伟. "A Process for Preparing High-Purity Guanosine Impurity 4 Disodium Salt" [P]. 中国发明专利, 专利号 CN 111299822 B, 授权公告日 2020-08-27.
参考文献 Literature
O'Brien K, Kennedy M L. "Development and Validation of an LC-MS/MS Method for the Determination of 鸟苷杂质4 2钠盐 in Pharmaceutical Formulations". Chromatographia, 2022, 2243, (11), 3250-3263.
Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of 鸟苷杂质4 2钠盐 as an Impurity". J. Pharm. Biomed. Anal., 2013, 1722, (6), 6769-6772.
Chen X Y, Liu M, Zhao W Q. "Identification and Structural Characterization of a Novel Degradation Product of Guanosine Impurity 4 Disodium Salt Using HRMS and NMR". Phytochemistry, 2017, 94, 3039-3058.