What is "rutin"

Rutin \Ru"tin\ (r[udd]"t[i^]n), n. (Chem.) A glucoside resembling, but distinct from, quercitrin. Rutin is found in the leaves of the rue ( Ruta graveolens) and other plants, and obtained as a bitter yellow crystalline substance which yields quercitin on decomposition.

n. (context biochemistry English) A flavonoid, found in many plants, that is a glycoside of quercetin and rutinose.

Rutin, also called rutoside, quercetin-3-O-rutinoside and sophorin, is the glycoside between the flavonol quercetin and the disaccharide rutinose (α-L-rhamnopyranosyl-(1→6))-β-D-glucopyranose). It is a citus flavenoid found in a wide variety of plants including citrus fruit.