5,3',4',3'',4'',5''-6-O-Ethyl-EGCG
5,3',4',3'',4'',5''-6-O-Ethyl-EGCG (Y6) is a potent adjuvant obtained by optimization of the structure of EGCG. 5,3',4',3'',4'',5''-6-O-Ethyl-EGCG (Y6) decreases the expression of HIF-1α and CBR1 at both the mRNA and protein levels.