m-PEG6-Hydrazide is widely used in bioconjugation and chemical synthesis. It serves as a linker molecule for attaching polyethylene glycol (PEG) chains to various biomolecules, such as proteins, peptides, and antibodies. This modification enhances the solubility, stability, and bioavailability of the conjugated molecules, making it valuable in drug delivery systems. Additionally, it is employed in the development of hydrogels and other biomaterials for tissue engineering and regenerative medicine. Its hydrazide group allows for specific reactions with aldehydes and ketones, enabling precise conjugation in diagnostic assays and targeted therapies.