Cy5-PEG-SH (MW 2000)

Cy5-PEG-SH (MW 2000) is a fluorescent labeling reagent that includes Cy5 fluorescent dye, polyethylene glycol (PEG), and a thiol group (SH), and is ideal for molecular conjugation. The high reactivity of the SH group enables it to form stable thioether bonds with various functional groups, such as maleimide.