NH-Bis-m-PEG4 is a bifunctional PEG linker where the PEG chains enhance solubility, reduce aggregation, and improve flexibility, while the amine provides a reactive handle for coupling to electrophiles, making it especially valuable for crosslinking, PEGylation, and surface modification.
Polyethylene Glycol PEG Linkers > PEG-X-PEG > PEG-NH-PEG
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