Figure 1: Chemical Structures of Major Green Tea Metabolites. A. Epigallocatechin-3-Gallate (EGCG), B. Epigallocatechin (EGC), C. Epicatechin-3-Gallate (ECG), D. Epicatechin (EC). Functional groups are denoted in red. Structures created using ChemSpider, a free chemical structure database (http://www.chemspider.com/).