Axispharm provides you with high purity 11-azidoundecanoic acid, a linker containing an azide group and a terminal carboxylic acid. Azido groups can react with alkynes, BCN, DBCO to form stable triazole bonds by Click Chemistry. Terminal carboxylic acids can react with primary amine groups in the presence of activators such as EDC or HATU to form stable amide bonds.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.