4-O-Galloylbergenin shows significant 2,2-diphenyl-1-picrylhydrazyl (DPPH) free-radical scavenging activity with EC50 7.8 uM, it shows more antioxidant activity than the positive control vitamin C (EC50 = 28.3 uM).

82958-45-0

C21H20O13

480.38

(< 1 mg/ml refers to the product slightly soluble or insoluble )
Powder: -20°C for 3 years
In solvent: -80°C for 2 years