Axispharm offers you N-(azide-PEG3)-N'-(Amine-C3-PEG4)-Cy5 CAS:2107273-70-9, a PEG derivative containing a cyanine dye with excitation/emission maxima at 649/667 nm, which contains The azide group enables Click Chemistry.
Fluorescent Dye > Cyanine Dyes > Cyanine5 Dye
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