CBz-n-amido-PEG2-acid is widely used in bioconjugation and drug delivery systems. Its PEG (polyethylene glycol) spacer enhances solubility and stability of conjugated molecules, making it valuable in pharmaceuticals. The CBz (carbobenzyloxy) protecting group allows selective deprotection, enabling controlled chemical reactions. This compound is often employed in peptide synthesis, where it acts as a linker to attach bioactive molecules to carriers or surfaces. It also finds application in creating antibody-drug conjugates (ADCs), improving the therapeutic index of drugs by ensuring targeted delivery. Additionally, it is utilized in material science for modifying surfaces to enhance biocompatibility.