This Cyanine5 NHS ester, also known as Cy5 NHS ester, is a reactive dye for the labeling of amino-groups in peptides, proteins, and oligonucleotides. This dye requires a small amount of organic co-solvent to be used in labeling reactions. This reagent is ideal for very cost-efficient labeling of soluble proteins as well as all kinds of peptides and oligonucleotides. This reagent also works well in organic solvents for small molecule labeling.
Cyanine 5 NHS ester tetrafluoroborate (Compound Cy5) is a cyanine dye that is used to in fluorescence detection of macromolecules. Cyanine 5 NHS ester tetrafluoroborate exhibits an excitation wavelength of 638 nm[1].
[1] Kang J, et al., Prevention of H‐aggregates formation in Cy5 labeled macromolecules[J]. International Journal of Polymer Science, 2010, 2010(1): 264781.
