IRDye 680RD Maleimide will label molecules with free sulfhydryl (-SH) groups, such as cysteine residues in proteins. Conjugation can be performed at physiological pH.
Which 700 Channel Dye Should I Use?![IRDye® 800CW Maleimide reacting with Thiol group](/images/bio/figures/reagents/irdye-800cw-maleimide-reacting-with-thiol.jpg)
Dye Structure
Properties
- Chemical Formula: C45H48CIN5Na2O12S3
- Molecular Weight: 1028.51 g/mol
- Exact Mass: 1027.19
Absorption and Emission Spectra
Solvent | Ext. Coeff. (M-1cm-1) | Absorption Maxima | Emission Maxima |
---|---|---|---|
Methanol | 170,000 | 680 nm | 694 nm |
1X PBS | 165,000 | 672 nm | 694 nm |
PBS: Methanol | 165,000 |
Absorption and Emission Spectra in 1X PBS
![IRDye 680RD Absorption and Emission Spectra](/images/bio/figures/reagents/irdye-680rd-absorption-emission-spectra.png)