FITC-PEG-Br (MW 5000)

FITC-PEG-Br (MW 5000) is a fluorescent dye composed of FITC (HY-66019), PEG and chlorine (-Cl) . The chlorine group is an electrophilic active group that can be used for nucleophilic substitution reactions and facilitate subsequent chemical modification (Ex/Em = 488/525 nm) .