Axispharm offers you high purity methyltetrazine-PEG8-DBCO, a PEG linker with one TCO and one DBCO group. This linker can in turn be used to conjugate azide-bearing biomolecules to TCO-labeled peptides or proteins without the need for catalysts or auxiliary reagents. DBCO is commonly used in copper-free click chemistry reactions.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.