t-Boc-N-amido-PEG-OH (tBoc-NH-PEG-OH), MW 3.5K is an amine protected polydisperse PEG. The hydroxyl group can be further derivatized into other compounds. The t-boc group can be cleaved using TFA or HCl under acidic conditions.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.