The chemical Grape Seed Extract has a designated molecular formula of C32H30O11 and a molecular weight of 590.581 g/mol. Synonyms may include: Grape-seed extract, Grape seed extract, Red wine extract, Grape (Vitis vinifera) Seed Extract [seed], Grape (Vitis vinifera) Seed Extract, Vitis vinifera seed, Wine grape (ChemID). Grape Seed Extract has been assigned a MeSH pharmacological action of: Antineoplastic.