Cyanine 5 NHS ester [equivalent to Quasar 670 NHS ester]

Cyanine 5 NHS ester is equivalent to Quasar 670 NHS ester, which is an indocarbocyanine dye that emits fluorescence in the red region of the visible spectrum. It serves as a direct alternative to Cy5(TM). The Quasar 670 is specifically designed for 5' labeling of fluorogenic probes used in 5' nuclease assays, Molecular Beacons(TM), and other detection assays. Chemical Properties Storage Upon receipt, store at -20°C in the dark. Protect from light and moisture. When stored as indicated, Cyanine 5 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 1469777-63-6 Formula C37H44ClN3O4 Molecular Weight 630.23 HPLC Purity >95% lambdaabs (nm) 647 epsilonmax (M-1 cm-1) 2.5x10^5 lambdafl (nm) 670 CF260 =epsilon260/epsilonmax NA CF280 =epsilon280/epsilonmax