17-(Amino-PEG6-ethylcarbamoyl)heptadecanoic acid is a PEG derivative containing an amino group with a terminal carboxylic acid. The amino group is reactive with carboxylic acids, activated NHS esters, carbonyls (ketone, aldehyde) etc. The terminal carboxylic acid can react with amine containing molecules in the presence of amide coupling reagents, such as EDC, DCC and HATU to form a stable amide bond.
Axispharm offers 3000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.