Patent ID: 8735529

Claim:
A clathrate compound comprising: an isophthalic acid compound represented by formula (I): where R 1 represents a C1 to C6 alkyl group, a C1 to C6 alkoxy group, a nitro group, or a hydroxyl group; and an imidazole compound represented by formula (II): where: R 2 represents a hydrogen atom, a C1 to C10 alkyl group, a phenyl group, a benzyl group, or a cyanoethyl group, and R 3 to R 5 each independently represents: a hydrogen atom, a nitro group, or a halogen atom, or a C1 to C20 alkyl group that may have a substituent, a phenyl group that may have a substituent, a benzyl group that may have a substituent, or a C1 to C20 acyl group that may have a substituent.