chemical compounds in Camellia sinensis var sinensis (tea plant) - phenolic flavan-3-ols

R = H, (+)-catechin, C

R = OH, (+)-gallocatechin, GC

R = H, (-)-epicatechin, EC

R = OH, (-)- epigallocatechin, EGC

R = H, (-)-epicatechin-3-O-gallate, ECG

R = OH, (-)-epigallocatechin-3-O-gallate, EGCG