M-PEG24-NHS ester is widely used in bioconjugation and protein modification. It is particularly valuable for attaching polyethylene glycol (PEG) chains to biomolecules, such as proteins, peptides, and antibodies, to improve their solubility, stability, and circulation time in the body. This compound is often employed in drug delivery systems to enhance the pharmacokinetic properties of therapeutic agents, reducing immunogenicity and increasing their half-life in vivo. Additionally, it is utilized in surface modification of nanoparticles and other materials to create biocompatible coatings, which are essential for applications in biomedical research and diagnostics. The NHS ester group allows for efficient and selective conjugation with primary amines, making it a versatile tool in the development of advanced bioconjugates and therapeutic formulations.