Cyanine 3 NHS ester is a reactive dye for the labeling of amino-groups in biomolecules, an analog of Cy3® NHS ester. This reagent is ideal for the labeling of soluble proteins, peptides, and oligonucleotides/DNA. For delicate proteins consider using water-soluble sulfo-Cyanine 3 NHS ester which does not require use of any co-solvent. Cyanine 3 NHS ester is a replacement for NHS esters of Cy3®, Alexa Fluor 546, and DyLight 549.

Product form:Red powder, Molecular formula:641.5 kDa, Molecular weight:641.5 kDa, Purity:> 95% (by ¹H NMR and HPLC-MS), Storage:Shipped at room temperature. Upon delivery, store in the dark at -20?C. Avoid prolonged exposure to light. Desiccate, Absorption maxima:555 nm, Extinction coefficient:150000 M^-1cm^-1, Emission maxima:570 nm, Fl quantum yield:0.31, Cas number:2632339-91-2, CF260:0.04, CF280:0.09, Mass spec shift:474.2, Solubility:Poorly soluble in water (2.3 mM = 1.5 g/L). Soluble in organic solvents (DMF, DMSO, dichloromethane).

+25° C.