Propargyl-PEG2-CH2CO2-NHS Ester (CAS: 2244145-13-7) is a bifunctional linker with a propargyl group for CuAAC “click” reactions and an NHS ester for amine coupling. Its PEG2 spacer enhances solubility and reduces steric hindrance, making it ideal for bioconjugation, PROTAC synthesis, and drug development applications.
Polyethylene Glycol PEG Linkers > Propargyl PEG > Propargyl-PEG-CH2CO2-NHS ester
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