N-(Benzyloxy carbonyl-PEG8-carbonyl)-N-bis(PEG8-NHS ester) is a branched PEG linker consisting of a benzyl protecting group that can be removed by hydrogenolysis and two NHS ester moieties for reacting directly and efficiently with amines. The PEG8 spacers enhance the flexibility and water solubility of the compound. The branched architecture supports the attachment of multiple ADC payloads or other molecules.
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