| abstract |
(57) [Summary] [Structure] The following formula; (In the formula, NAP represents a naphthyl group which may have a substituent, and R 1 and R 2 each represent a hydrocarbon group, an alkoxyalkyl group or an alkoxyalkyleneoxyalkyl group). Acid diester derivative, ultraviolet absorber and cosmetic containing the same. [Effect] It has an excellent action of absorbing ultraviolet rays and has good stability to light. |