Castavinols are natural phenolic compounds found in red wines. These molecules are colorless and are derived from anthocyanin pigments. Thus their formation leads to a wine color loss.
Known molecules Castavinol C1 Castavinol C2 Castavinol C3 Castavinol C4
References
External links 1996 : Les molécules des futurs millésimes Bordelais ? C. Castagnino, C. Chèze and J. Vercauteren, Bull. Soc. Pharm. Bordeaux, 1997, 136, pp. 19-36 (French)