Novel fluorescent label compounds

Abstract From the Canadian patent

It is intended to provide novel labeling reagents characterized by having a group capable of binding to a substance to be labeled (for example a , biological substance, a physiologically active substance etc.), easily , forming a complex together with a rare earth ion the complex being stable in , an aqueous solution and having a sufficient fluorescence intensity and a long fluorescence life time regardless of buffer types; complexes composed of the above labeling reagent with a rare earth ion; fluorescence labels containing the above complex; a fluorescence assay method using the above fluorescent label; etc. Namely, labeling reagents comprising a compound having a …