tBOC-NH-PEG-SC (t-Boc-N-amido-PEG-Succinimidyl Carbonate), MW 3.4K is an amine-reactive heterobifunctional PEG polymer. Coupling between amine and NHS forms an amide bond and can be carried out in aqueous solutions at pH 7 to 9.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.