Propargyl-O-C1-amido-PEG4-C2-NHS ester is a non-cleavable 4 unit PEG linker for ADC conjugation. Propargyl-O-C1-amido-PEG4-C2-NHS ester is a click chemistry reagent, it contains an alkyne group and can undergo CuAAc with molecules containing azide groups.
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