Propargyl-PEG3-acid is a PEG3 linker with a terminal alkyne for click chemistry and a carboxylic acid for amide coupling. Its compact, hydrophilic spacer makes it especially effective for bioconjugation, drug delivery, and surface modification
Polyethylene Glycol PEG Linkers > Propargyl PEG > Propargyl-PEG-acid
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