A reactive dye with a maleimide group for the labeling of thiol groups of proteins and other biomolecules, an analog of Cy7® maleimide.

Sulfo-Cyanine7 is a near infrared fluorophore which is hydrophilic and contains a rigidizing ring in its heptamethine chain that improves its photophysical properties. A great dye for various applications, including NIR imaging.

General properties

Appearance:

dark green powder

Mass spec M+ increment:

868.2

Molecular weight:

869.10

Molecular formula:

C43H49KN4O9S2

IUPAC name:

1-[2-(6-{2-[(E)-2-[(E)-3-{(E)-2-[1-Methyl-3,3-dimethyl-5-(oxysulfonyl)-2-indolinylidene]ethylidene}-1-cyclohexen-1-yl]ethenyl]-3,3-dimethyl-5-(oxysulfonyl)-3H-indol-1-yl}hexanoylamino)ethyl]-1H-pyrrole-2,5-dione, potassium salt

Solubility:

Good in water, DMF, DMSO. Low in non-polar organic solvents.

Quality control:

NMR1H, HPLC-MS (95%)

Storage conditions:

Storage: 24 months after receival at -20°C in the dark. Transportation: at room temperature for up to 3 weeks. Avoid prolonged exposure to light. Desiccate.