Propargyl-PEG4-acid is a high-purity PEG linker with a terminal alkyne specifically for click chemistry and a carboxylic acid for orthogonal conjugation. The PEG4 spacer especially enhances solubility and flexibility for efficient bioconjugation.
Polyethylene Glycol PEG Linkers > Propargyl PEG > Propargyl-PEG-acid
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