发明人李文辉,郭海燕,何建平. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 110240915 A, 授权公告日 2022-08-26.
发明人陈志强,徐明华,沈红梅. "Method for the Synthesis of 9,10-Dihydroxy-5-methoxy-2H-pyrano[2,3,4-kl]xanthen-2-one" [P]. 中国发明专利, 专利号 CN 111510451 A, 授权公告日 2021-12-14.
发明人林芳,刘建华,赵玉洁. "A Process for Preparing High-Purity 9,10-Dihydroxy-5-methoxy-2H-pyrano[2,3,4-kl]xanthen-2-one" [P]. 中国发明专利, 专利号 CN 112178629 B, 授权公告日 2019-07-14.
参考文献 Literature
Jensen P, Larsen A M, Olsen K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2018, 743, (12), 3567-3587.
Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Nat. Prod., 2014, 703, (2), 1915-1925.
Yang F, Sun W, Liu J. "Identification and Structural Characterization of a Novel Degradation Product of 9,10-Dihydroxy-5-methoxy-2H-pyrano[2,3,4-kl]xanthen-2-one Using HRMS and NMR". Biomed. Chromatogr., 2020, 584, (11), 92-100.
Kowalski T, Nowak Z. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Rapid Commun. Mass Spectrom., 2021, 160, (2), 1570-1592.