| 摘要 |
A reagent for measurement of reactive oxygen, which can be used with a light of the near infrared region showing superior biological tissue permeability, wherein (i) a first cyanine compound residue and a second cyanine compound residue are bound to each other, (ii) the first cyanine compound residue has a property that it easily reacts with a reactive oxygen species and is thereby decomposed, and (iii) the second cyanine compound residue either equals or surpasses the first cyanine compound residue in its stability to the reactive oxygen species, and the first cyanine compound residue acts as a quenching group for the second cyanine compound residue.
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