CAGED COMPOUND

摘要

Disclosed is a caged compound having a protective group against photodegradation represented by General formula (I) or a salt thereof. Wherein R1 represents an aryl group; R2, R4, R5 and R7 independently represent a C1-6 alkyl group; R3 and R6 independently represent a hydrogen atom, a C1-6 alkyl group or the like; and R8 and R9 independently represent a fluorine atom or a group represented by General formula (a), provided that both of R8 and R9 do not represent a fluorine atom. Wherein R10 represents a residue of a compound having a carboxy group, a phosphono group or an amino group (provided that the residue is produced by removing a hydrogen atom from the carboxyl group, the phosphono group or the amino group in the compound); and R11 represents a hydrogen atom or a substituent occurring on a benzene ring.