CAS:2107273-72-1 N-(m-PEG4)-N’-(4-hydroxycyclohexyl-1-amido-PEG4)-Cy5 is a cyanine-labeled PEG linker with excitation/emission maxima at 649/667 nm, containing a hydroxyl group that can Further derivatization or substitution 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.