Biotin-PEG4-tris-alkyne is a biotinylated, branched PEG linker possessing three alkyne groups to react with azide-containing biomolecules and a biotin moiety to react with amine molecules in the presence of activators such as EDC or HATU. The PEG4 chain elevates the molecule's hydrophilicity. Branched linkers allow for more payload attachment to ADC.
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