The molecule is a proanthocyanidin consisting of two molecules of (-)-epicatechin joined by a bond between positions 4 and 6' in beta-configuration. It can be found in grape seeds, in Hibiscus cannabinus (kenaf) root and bark, in apple and in cacao. It has a role as a metabolite. It is a hydroxyflavan, a proanthocyanidin, a biflavonoid and a polyphenol. It derives from a (-)-epicatechin.
(2R,3R)-2-(3,4-dihydroxyphenyl)-6-[(2R,3R,4S)-2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxy-3,4-dihydro-2H-chromen-4-yl]-3,4-dihydro-2H-chromene-3,5,7-triol