m-PEG-Succinimidyl Carbonate (MPEG-SC), MW 2K is a linear PEG reagent that reacts with succinimidyl carbonate and amine groups. Active NHS esters can be used to conjugate amine-containing ligands.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.