Cyanine 7 NHS ester [Analog to Cy7(R) NHS ester]

Cyanine7 is an amine-reactive near-infrared (NIR) fluorescent dye and an enhanced analog of Cy7(R). NIR fluorophores leverage the near-infrared window of biological tissues, where increased tissue transparency in this spectral range enables effective in vivo imaging. This reagent can be used to create Cyanine7-labeled biomolecules for various applications, including in vivo research and drug development studies. Cyanine7 features a rigidized central polymethine chain, a structural enhancement that boosts its quantum yield by 20% compared to its parent structure, resulting in greater fluorescence brightness. Labeling with this reagent requires the use of an organic co-solvent (refer to the Recommended Protocols section for details). For protein NIR labeling, the water-soluble Cyanine7 NHS ester is also available and is the recommended option. Chemical Properties Storage Upon receipt, store at -20°C in the dark. Protect from light and moisture. When stored as indicated, Cyanine 7 NHS ester is stable for at least 1 year. This product is for Research Use Only· Not for Human or Veterinary or Therapeutic Use CAS number NA Formula C38H44ClN3O4 Molecular Weight 642.24 HPLC Purity >95% lambdaabs (nm) 750 epsilonmax (M-1 cm-1) 1.99x10^5 lambdafl (nm) 773 CF260 =epsilon260/epsilonmax NA CF280 =epsilon280/epsilonmax