IRDye 680RD Maleimide Can Label Molecules with Free Sulfhydryls.
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IRDye® 680RD Maleimide

IRDye® 680RD Maleimide will label molecules with free sulfhydryl (-SH) groups, such as cysteine residues in proteins. Conjugation can be performed at physiological pH.

Absorption and Emission Spectra in 1X PBS
IRDye 680RD in PBS
Solvent Ext. Coeff. Abs Max Em Max
(M-1 cm-1) (nm) (nm)
Methanol 170,000 680 694
1X PBS 165,000 672 694
PBS:Methanol 165,000    

Maleimide reacting with a Thiol group

[ABOVE] Maleimide reacting with a Thiol group



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