A compound represented by the following general formula (I) or a salt thereof:
wherein R1 represents a glycosyl group, a phosphate group, or a cyclic phosphate group bound to R2; R2 represents -CH2OH, -CHO, -CH2NH2, -CH2-amino acid residue, or -CH2-OPO2H; and R3 represents hydrogen atom, or -PO3H2, and a composition for cosmetics, medicaments, foodstuffs, and/or feeds containing the aforementioned compound or a salt thereof.
                            由以下通式 (I) 代表的化合物或其盐:
其中 R1 代表糖基、
磷酸基或与 R2 结合的环
磷酸基;R2 代表-   OH、-CHO、-   NH2、-
CH2-
氨基酸残基或-   -OPO2H;R3 代表氢原子或-PO3H2,以及含有上述化合物或其盐的用于化妆品、药物、食品和/或饲料的组合物。