N-(mPEG4)-N’-(hydroxy-PEG2)-Cy5 is a cyanine-labeled PEG derivative with excitation/emission maxima of 649/667 nm, which can be further derivatized or replaced with other reactive functional groups. Hydrophilic PEG spacers increase solubility in aqueous media and reduce steric hindrance during conjugation.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.
