表儿茶素（EC)
2-(3,4-羟基苯基)-3,4-二氢-2H-1-苯并吡喃-3,5,7-三醇，EC (?)-Epicatechin
(?)-cis-3,3′,4′,5,7-Pentahydroxyflavane
(2R,3R)-2-(3,4-Dihydroxyphenyl)-3,4-dihydro-1(2H)-benzopyran-3,5,7-triol
2-(3,4-Dihydroxyphenyl)-3,4-dihydro-2H-1-benzopyran-3,5,7-triol
L-Epicatechin