Cy3-PEG-NH2 (MW 3400)

Cy3-PEG-NH2 (MW 3400) is a fluorescent amine-reactive reagent combining a Cy3 dye (~570 nm emission) with a polyethylene glycol spacer. It is widely used for in vitro and in vivo fluorescent labeling, imaging, and tracing in applications such as microscopy, flow cytometry, and biomolecule conjugation.