Azide-PEG2-Val-Cit-PAB-OH serves as a cleavable linker conjugate, which may be employed in the creation of antibody-drug conjugates. The azide moiety can react with alkyne-bearing entities through click chemistry, and the Val-Cit dipeptide is cathepsin-cleavable. The PEG2 spacer improves the molecule's hydrophilicity.
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