Also available in 1 mL, 5 mg, 10 mg, 25 mg and bulk. Please contact Fisher for quotes. (-)-Epigallocatechin-3-(3''-O-methyl) gallate ((-)-EGCG-3''-O-ME) is a natural product isolated from tea leaves with potent antioxidant, cytotoxic, and antibacterial properties, and it improves the adhesive stability of etching rinsing adhesives to dentin. Purity 99.59%