Rutin, also called rutoside,quercetin-3-O-rutinoside andsophorin, is the glycoside between theflavonol quercetin and thedisacchariderutinose(α-L-Rhamnopyranosyl-(1→6))-β-D-glucopyranose).In fava d''anta, the synthesis is done via a rutin synthase activity.^[1]