方案摘要
方案下载| 应用领域 | 制药/生物制药 |
| 检测样本 | 化药制剂 |
| 检测项目 | 限度检查>异构体 |
| 参考标准 | -- |
Abstract: A recycling counter-current chromatographic system was first set up with a high-speed counter-current chromatography instrument coupled with a column switching valve. This system was first successfully applied to the preparative separation of epimers, gambogic acid and epigambogic acid from Garcinia hanburyi using n-hexane–methanol–water (5:4:1, v/v/v) as the two-phase solvent system. As a result, 28.2 mg gambogic acid and 18.4 mg epigambogic acid were separated from 50 mg of mixture. Their purities were both above 97% as determined by HPLC. The chemical structures were then identified by their H-NMR and C-NMR spectra.
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