Cy3-PEG-NH2 (MW 1000) is a polyethylene glycol derivative that incorporates Cy3 fluorescent dye, polyethylene glycol (PEG), and an amino group. This compound is commonly utilized in applications such as immunolabeling, nucleic acid labeling, fluorescence microscopy, and flow cytometry. The maximum emission wavelength of Cy3 ranges from approximately 562 to 570 nm. Cy3-PEG-NH2 (MW 1000) is suitable for fluorescence imaging, fluorescent tracing, and fluorescent labeling.