S-Acetyl-peg6-tos is widely used in bioconjugation and drug delivery systems due to its ability to modify and stabilize biomolecules. It serves as a linker in the synthesis of antibody-drug conjugates (ADCs), enhancing the solubility and stability of therapeutic compounds. The compound is also employed in the development of PEGylated pharmaceuticals, where it improves the pharmacokinetic properties of drugs by prolonging their circulation time in the body. Additionally, it is utilized in protein and peptide modification to reduce immunogenicity and increase bioavailability, making it valuable in therapeutic applications. Its role in targeted drug delivery systems further highlights its importance in advancing precision medicine.