Quercetin-3-O-Glucoside is found in alcoholic beverages, occurs widely in plants and present in red wine. It is can be isolated from mangoes and from Rheum nobile, the Noble rhubarb or Sikkim rhubarb, a giant herbaceous plant native to the Himalaya. Quercetin-3-O-Glucoside has been shown to exhibit anti-proliferative function [HMDB].