| 主权项 |
1. A compound represented by formula (I) below, or a salt thereof where: R1 represents 1 to 4 monovalent substituents present on a benzene ring, which are the same or different, where at least one of the substituents acts as a capturing group in relation to a substance to be measured; R2 and R3 are, independently, a hydrogen atom, a C1-6 alkyl group, or a halogen atom; R4 and R5 are, independently, a C1-6 alkyl group or an aryl group; R6 and R7 are, independently, a hydrogen atom, a C1-6 alkyl group, or a halogen atom; R8 is a substituent which acts as a capturing group in relation to the substance to be measured, a hydrogen atom, an alkylcarbonyl group, or an alkylcarbonyloxymethyl group; and X is a silicon, germanium, or tin atom. |
