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Cy5, free acid


Cy5 is a bright, far-red fluorescent dye. It has been shown to be useful as fluorescent label for biological compounds. Cy5 is intensely fluorescent and highly water soluble.  

The NHS ester (or succinimidyl ester) is the most popular amine reactive group for labeling with the primary amines (R-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules. The resulting CyDye conjugate will exhibit brighter fluorescence and greater photostability than the conjugates of other spectrally similar fluorophores.

Ex/Em: 649/670 nm
Extinction coefficient: 250,000
Molecular weight: 841
Excitation source: 633 nm
Product Size: 5 mg
Storage Conditions: -20 ℃, protect from light
Shipping Condition: Ice pack


Fluorescent labeling, 2-D DIGE

To order

Buy Cat.No. Product Name Ex/Em(nm) Unit Price
C167 Cy5 free acid 649/670 5 mg $275


Protocol (PDF): CyDye NHS Esters
Quick Reference (PDF): CyDye Quick Reference
MSDS (PDF): C167