Azido-PEG3-Maleimide linker contains an azide group and maleimide group. The PEG spacer increases the aqueous solubility of the resulting compound. The azide group readily reacts with alkyne, BCN, DBCO through Click Chemistry to yield a stable triazole linkage. The maleimide group will react specifically with a thiol group to form a C-S covalent bond, which is extremely useful for bioconjugation with cysteine thiol residues.
Axispharm offers 3000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.