Azido-PEG4-12-nitrophenyl carbonate is a PEG linker that is readily displaced by amine nucleophiles to form carbamate bonds under mild conditions. The terminal azide is free to perform click chemistry with terminal alkynes or strained cyclooctynes such as DBCO or BCN. The PEG4 chain improves the water-soliblity of the compound.
Usually ships within 24 hours.