m-PEG4-phosphonicacidethylester is a PEGylation-based linker for the design and synthesis of PROTACs, which are heterobifunctional molecules facilitating targeted protein degradation[1].
m-PEG4-C6-phosphonicacidethylester is a polyethylene glycol (PEG)-based linker compound utilized for synthesizing proteolysis-targeting chimeras (PROTACs)[1].