N-DBCO-N-bis(PEG8-Val-Cit-PAB-MMAE) serves as a branched PEG linker with two branches, each comprised of a cathepsin-cleavable Val-Cit dipeptide and cytotoxic MMAE payload, which are attachable to monoclonal antibodies for targeting cancer. The DBCO group can partake in copper-free catalyzed reactions with azide-bearing biomolecules. The PEG8 chains enhance the water-solubility of the molecule. Reagent grade, for research purpose.
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