Cyanine 5.5 NHS ester is a reactive dye for the labeling of amino-groups in peptides, proteins, and oligonucleotides, an analog of Cy5.5® NHS ester. Cy5.5 is a far-red (and near-infrared) emitting dye which is ideal for fluorescence measurements where background fluorescence is a concern. It is also suitable for in vivo NIR imaging experiments. This reagent can replace NHS esters of Cy5.5® and DyLight 680.
Absorption Maxima
684 nm
Extinction Coefficient
198000 M-1cm-1
Emission Maxima
710 nm
Fluorescence Quantum Yield
0.2
CAS Number
2375105-86-3
CF260
0.07
CF280
0.03
Purity
95% (by 1H NMR and HPLC-MS).
Molecular Formula
C44H46N3BF4O4
Molecular Weight
767.66 kDa
Product Form
Dark blue solid.
Solubility
Soluble in organic solvents (DMSO, DMF, dichloromethane). Practically insoluble in water (< 1 uM, < 1 mg/L).
Storage
Shipped at room temperature. Upon delivery, store in the dark at -20°C. Avoid prolonged exposure to light. Desiccate.
Disclaimer
This product is for research use only. It is not intended for diagnostic or therapeutic use.
