Agent: Patentmetrix20080014602 - Fluorescent probe: (wherein, R1 represents a monovalent substituent other than hydrogen atom, carboxy group, or sulfo group; R2 represents hydrogen atom, or a monovalent substituent; R3 and R4 each independently represents hydrogen atom or a halogen atom; and R5 represents a monovalent group which is cleaved by contact with a measuring object,...