| abstract |
The present invention provides a useful antioxidant having a stronger antioxidative activity, which is safe and easily available, and is useful as a pharmaceutical, cosmetic, food and drink, food additive and the like. [MEANS FOR SOLVING PROBLEMS] It has been found that 4- (3,4-Dihydroxyphenyl) -6,7-dihydroxy-2-naphtalenecarboxylic acid (Compound I) isolated from Acanthopanax sessiliflorus has a strong antioxidant action. An antioxidant is provided. [Chemical 1] [Selection figure] None |