英文别名Proanthocyanidin A2; Procyanidin Impurity 1; PROCYANIDOEPICATECHIN; Procyanidol A2; Epicatechin-(2β→8)-epicatechin; Proanthocyanidin A-2; Procyanidin dimer A2; Dimeric catechin; (2R,3R,8S,14R,15R)-2,8-Bis(3,4-dihydroxyphenyl)-3,4-dihydro-2H,14H-8,14-methanobenzo[7,8][1,3]dioxocino[4,5-h]chromene-3,5,11,13,15-pentaol 
