1-isothiocyanato-PEG4-Alcohol is a crosslinker containing an hydroxyl group and isothiocyanato group. The hydroxyl group can be derivatized to other reactive functional group for conjugation. Isothiocyanate readily reacts with amine to form thiourea, which makes it an ideal tool for amine labeling. The PEG spacer increases the aqueous solubility of the resulting compound.
Axispharm offers 3000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.