The molecule is a disaccharide derivative that is 1,3,6-trihydroxy-2-methyl-9,10-anthraquinone attached to a (3'-O-acetyl)-alpha-L-rhamnopyranosyl-(1->2)-beta-D-glucopyranosyl residue at position 3 via a glycosidic linkage. It has been isolated from the roots of Rubia yunnanensis. It has a role as a plant metabolite. It is a dihydroxyanthraquinone, a disaccharide derivative and an acetate ester. It derives from a 1,3,6-trihydroxy-2-methyl-9,10-anthraquinone.
[(2S,3R,4S,5R,6R)-2-(4,7-dihydroxy-3-methyl-9,10-dioxoanthracen-2-yl)oxy-5-hydroxy-6-(hydroxymethyl)-3-[(2S,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxyoxan-4-yl] acetate