Multi-Arm PEGs

Multi-Arm PEGs are a class of branched polyethylene glycol derivatives characterized by three or more reactive terminal groups (e.g., NH-(mPEGn)₂ and analogous multi-arm structures), which enable simultaneous conjugation with multiple molecules or surfaces.  These reagents are pivotal for constructing high-density functionalized nanostructures—such as hydrogels, drug carriers, and dendritic polymers—with enhanced stability and multivalent binding capabilities.  Their structural versatility makes them indispensable in advanced drug delivery, tissue engineering, and biomedical material design.