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A water soluble, hydrophilic sulfo-Cyanine5 maleimide (Cy5® maleimide analog). We recommend this product for protein labeling, including labeling of antibodies as a perfect replacement for Cy5® maleimide. Labeled proteins can be easily separated from unreacted dye by gel filtration, spin column purification, dialysis, electrophoresis or chromatography.
An analog without sulfo groups, Cyanine5 maleimide, is also available.
Download in ChemDraw format
Sulfo-Cyanine5 absorbance and emission spectra
Recommended protocol
Maleimide labeling of proteins and other thiolated biomolecules
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