| abstract |
(57) 【Abstract】 PROBLEM TO BE SOLVED: To exhibit a special feature of having a chelating property only when exposed to ultraviolet rays, that is, only when it is necessary to neutralize a trace amount of metal intervening in an oxidative damage phenomenon. Provide a chelating agent that can limit side effects. A compound containing a group containing at least one functional group that is blocked by at least one photocleavable substituent and chelate to a transition metal is used. |