... 501-36-0 Melt Point: 253~257Solubility: Poor solubility in water, soluble in aether, chloroform, ethanol, acetic acid and acetone.Appearance: ... a class of polyphenolic compounds called stilbenes , found largely in the skins of red grapes and root of Polygonum ... and lily, and in other foods such as mulberries and peanuts, resveratrol's most abundant natural sources are Vitis vinifera, labrusca, and ...