Sulfo Cy3 bis COOH

Sulfo Cy3 bis COOH is a water-soluble, reactive derivative of the Cy3 fluorophore, featuring two carboxyl groups for covalent conjugation to amine-containing biomolecules. It is widely used for fluorescent labeling in applications such as in vitro protein analysis, cellular imaging, and in vivo tracking due to its enhanced solubility and brightness.