| abstract |
(57) [Abstract] [Problem] It is excellent in pigmentation suppression effect and whitening effect, and To provide cosmetics with excellent skin safety and storage stability. SOLUTION: General formula (1) (Wherein R 1 to R 4 are each independently a hydrogen atom, -20 represents a linear or branched alkyl group, alkenyl group, acyl group and benzyl group which may be substituted with alkoxy. ) Is prepared as an active ingredient. |