The present invention provides a novel detecting reagent for double-stranded nucleic acid, and a method of using it to detect double-stranded nucleic acid formed by hybridization with a probe, with absolutely no labeling of the target nucleic acid. The detecting reagent for double-stranded nucleic acid of the invention is characterized by comprising, in the same molecule, a naphthalenediimide group which is intercalatable into double-stranded nucleic acid and a .beta.-diketone group capable of forming a lanthanoid metal complex.

A invenção atual fornece uma novela que detectam o reagent para o ácido nucleic double-stranded, e um método de usá-lo detectar o ácido nucleic double-stranded dado forma pelo hybridization com uma ponta de prova, com absolutamente nenhum etiquetar do ácido nucleic do alvo. O reagent detectando para o ácido nucleic double-stranded da invenção é caracterizado compreender, na mesma molécula, por um grupo do naphthalenediimide que seja intercalatable no ácido nucleic double-stranded e em um grupo do beta.-beta.-diketone capaz de dar forma a um complexo do metal do lanthanoid.

 
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