PROBLEM TO BE SOLVED: To provide an ultraviolet absorber excellent in UV-A absorbency, and a skin external preparation excellent in UV-A absorbency.SOLUTION: The invention provides an ultraviolet absorber represented by the general formula (I) in the figure, and a skin external preparation containing the ultraviolet absorber. In the general formula (I), R1 and R2 each independently represent a hydrogen atom or monovalent substituent m represents an integer from 0 to 4 X each represent a monovalent substituent, and may be identical to or different from each other if multiple X are present and L represents a ligand.SELECTED DRAWING: NoneCOPYRIGHT: (C)2017,JPO&INPIT【課題】UV-A吸収性に優れた紫外線吸収剤およびUV-A吸収性に優れた皮膚外用剤を提供する。【解決手段】下記一般式(I)で表される紫外線吸収剤、および前記紫外線吸収剤を含有する皮膚外用剤である。下記一般式(I)中、R1およびR2は、それぞれ独立に水素原子または1価の置換基を表す。mは0~4の整数を表す。Xは1価の置換基を表し、Xが複数存在する場合、互いに同じでも異なっていてもよい。Lは配位子を表す。【選択図】なし
