2-(3,4-Dihydroxyphenyl)-3,4,5,7-chromantetrol 2H-1-Benzopyran-3,4,5,7-tetrol, 2-(3,4-dihydroxyphenyl)-3,4-dihydro 3,3',4,4',5,7-Flavanhexol 480-17-1 Flavan-3,3',4,4',5,7-hexol Leucocianidol Leucocianidol [DCF:INN] Leucocianidolum [INN-Latin] Leucocyanidin Vitamin P faktor