N-(m-PEG4)-N’-(Amino-PEG3)-Cy5 TFA salt CAS:2107272-96-6 is a cyanine dye with an excitation/emission maximum of 649/667 nm and a free amine group, activated NHS ester, Carbonyl PEG linkers, hydrophilic PEG spacers increase solubility in aqueous media.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.