Propargyl-PEG2-acrylate is widely used in the field of bioconjugation and polymer chemistry due to its unique functional groups. The propargyl group allows for click chemistry reactions, particularly copper-catalyzed azide-alkyne cycloaddition (CuAAC), which is essential for creating stable and specific linkages in biomolecules. This makes it valuable in the development of drug delivery systems, where precise attachment of therapeutic agents to carriers is required. Additionally, the acrylate group enables polymerization, making it suitable for synthesizing hydrogels or functionalized polymers used in tissue engineering and biomedical applications. Its dual reactivity also supports the creation of advanced materials with tailored properties for biosensors and diagnostic tools.