N-(C1-Mal)-N-bis(PEG2-t-butyl ester) serves as a branched PEG linker containing a maleimide group to react with thiol-containing biomolecules and two t-butyl ester groups, which can be deprotected under acidic conditions. The hydrophilic PEG spacer increases solubility in aqueous media. Branched linkers allow for more payload attachment to ADC. Reagent grade, for research use only.
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