Title HPLC application for column chromatography of chrysophanol from Rheum ribes roots extract Type of Research Presentation Keywords Rheum ribes, chrysophanol, HPLC, chromatography Abstract HPLC application for column chromatography of chrysophanol from Rheum ribes roots Researchers mohammad Galehassadi (First Researcher)، Morteza Maboudi Jahangiri (Second Researcher)، Hassan Heidari (Third Researcher)، Hossein Hashempour (Fourth Researcher)