TCO-PNB Ester contains two reactive substituents. The TCO group can participate in Click Chemistry reactions with tetrazine-tagged molecules through an ultrafast bioorthogonal ligation process. The PNB ester can also be used to react with amine containing biomolecules.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.