N-(Azido-PEG3)-N-Boc-PEG3-NHS ester is a branched PEGylation linker. The azide group allows for Click Chemistry reactions to take place. The Boc-protected amine can be deprotected under acidic conditions. The NHS ester can react with primary amines. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.