Dyes for Your Near-Infrared Imaging Needs

IRDye® 750 Infrared Dye

IRDye 750 is a symmetric dye with a peak excitation at 756 nm and maximum emission at 776 nm in 1X PBS. It is spectrally similar to other 750 dyes that are used for flow cytometry, microscopy and other applications. This dye is available as an NHS ester or maleimide form.

IRDye 750 Infrared Dye Absorption and Emission spectra  in Methanol. Absorption Max = 766 nm; Emission Max = 776 nm.
Solvent Ext. Coeff. (M-1cm-1) Abs Max (nm) Em Max (nm)
Methanol 330,000 766 776
1X PBS 260,000 756 776
PBS: Methanol 260,000

NHS Ester

IRDye 750 NHS Ester is an infrared dye with detection near 750 nm. The NHS ester reactive group provides the functionality for labeling primary amino groups.

Storage: -20 °C


Maleimide

IRDye 750 Maleimide is an infrared dye with detection near 750 nm. Maleimide reactive group provides the functionality for labeling molecules that contain free sulfhydryl (-SH thiol) groups. This reactive group allows conjugations reactions to be performed at physiological pH.

Storage: -20 °C


 

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