Hydroxyl PEG Amine(HO-PEG-NH2), HCl Salt, MW 3.5K is a heterobifunctional PEG. Often used as a cross-linking agent or as a spacer between two different chemical entities. Can be used for PROTAC synthesis.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.