3-Azidopropionic acid CAS:18523-47-2 is a building block containing an azide group and a carboxylic acid group that reacts with a primary amine group in the presence of an activator such as EDC or DCC to form a stable amide bond. Terminal azido groups can undergo copper-catalyzed click chemistry reactions with alkynyl groups. 3-azidopropionic acid can be used for cross-linking, synthesis of chemical probes, and other biological conjugation strategies.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.