t-butyl ester-PEG4-Val-Cit-PAB-MMAE can be used antibody drug conjugation as a precursor. It contains a PEG4 spacer, a protease-sensitive Val-Cit dipeptide, a PAB linker, and an MMAE payload. It can be attached to a monoclonal antibody (MAB) which directs it toward cancer cells. Under acidic conditions, the t-butyl group can be removed. Reagent grade, for research use only.
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