Bromo-PEG4-alcohol linker contains a bromide group with a terminal hydroxyl group. The PEG spacer increases the aqueous solubility of the resulting compound. The bromide (Br) is a very good leaving group for nucleophilic substitution reactions. The hydroxyl group can be derivatized to other reactive functional groups.
Axispharm offers 3000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.