tBOC-NH-PEG-SVA (t-Boc-NH-PEG-Succinimidyl Valerate), MW 3.4K is an active ester PEGylated polymer with a t-Boc protecting group. N-hydroxysuccinimide (NHS) active esters can form physiologically stable amide bonds with the amine group of lysine under mild reaction conditions.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.