Boc-NH-PEG3-CH2COOH

Boc-NH-PEG3-CH2COOH is a building block.{53629,53630} It has been used as a linker in the synthesis of proteolysis-targeting chimeras (PROTACs) targeting MEK.{53629} It has also been used as a spacer in the synthesis of radiolabeled probes for dual labeling of tumor integrin aVB3 and the gastrin-releasing peptide receptor (GRPR) in tumor tissue in vivo.{53630}