2093154-03-9

N-Benzyl-N-bis(PEG3-acid) is a PEG linker that contains a benzyl group and two PEG3-acid groups. The benzyl group acts as a protecting group for the amine and can be deprotected via hydrogenolysis. The terminal carboxylic acid can react with primary amine groups in the presence of activators (e.g. EDC, or HATU) to form a stable amide bond. PEG3 linker increases the water solubility of the compound.