Propargyl-PEG2-acid is a PEG2 linker with a terminal alkyne for click chemistry and a carboxylic acid for amide coupling. Its short spacer and dual reactivity make it especially suitable for bioconjugation, drug delivery, and material modification.
Polyethylene Glycol PEG Linkers > Propargyl PEG > Propargyl-PEG-acid
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