Fmoc-Gly-Gly-Gly-PEG4-DBCO consists of an Fmoc-protected tripeptide with three glycine residues and DBCO for undergoing copper-free click chemistry with azides. It can be applied in the synthesis of antibody-drug conjugates. The Fmoc group can be deprotected under basic conditions to obtain the free amine, which can be used for further conjugations. The PEG4 linker enhances the water-solubility of the compound.
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