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Reagent for detecting an analyte

  • US 7,892,748 B2
  • Filed: 12/14/2004
  • Issued: 02/22/2011
  • Est. Priority Date: 12/16/2003
  • Status: Active Grant
First Claim
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1. A reagent for use in detecting an analyte, comprising a fluorescent energy donor, an energy acceptor and optionally a counterion, the energy donor and the energy acceptor being such that when they are sufficiently close to one another energy is non-radiatively transferred from the energy donor following excitation thereof to the energy acceptor quenching fluorescence of the energy donor, wherein the energy acceptor is of the formula:

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