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Sulfo-Cyanine5.5 NHS ester is an amine reactive activated ester of sulfonated far red Cyanine5.5 fluorophore, an analog of Cy5.5®. This is a reagent of choice for the labeling of antibodies, sensitive proteins, and others which require reactions in purely aqueous environment, or without any significant additions of organic co-solvents.
The dye is well suitable for non-invasive in vivo NIR imaging, and for the applications requiring low fluorescent background.
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Absorption and emission spectra of sulfo-Cyanine5.5 fluorophore
Recommended protocol
NHS ester labeling of amino biomolecules
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Cyanine7.5 NHS ester
Amine reactive NHS ester of NIR fluorescent dye Cyanine7.5.
