n fmoc n' (azido peg4) l lysine

N-Fmoc-N'-(azido-PEG4)-L-Lysine is an alkyl ether-based PROTAC linker commonly utilized for the synthesis of PROTACs[1].

N-Fmoc-N'-(azido-PEG4)-L-Lysine-PFP ester is a alkyl ether-based linker for PROTACs which joins two essential ligands, crucial for forming PROTAC molecules. This linker enables selective protein degradation by leveraging the ubiquitin-proteasome system within cells.