Hydroxy-amino-bis(peg2-propargyl) is primarily utilized in the field of bioconjugation and chemical biology. Its structure, featuring PEG (polyethylene glycol) spacers and propargyl groups, makes it highly effective for linking biomolecules such as proteins, peptides, or nucleic acids. The propargyl groups enable click chemistry reactions, particularly copper-catalyzed azide-alkyne cycloaddition (CuAAC), which is widely used for creating stable and specific covalent bonds. This chemical is also employed in the development of drug delivery systems, where it helps in modifying therapeutic agents to improve their solubility, stability, and targeting efficiency. Additionally, it finds applications in the synthesis of advanced materials, such as hydrogels or polymer networks, which are used in tissue engineering and regenerative medicine. Its versatility and biocompatibility make it a valuable tool in both research and industrial settings.