Propargyl-PEG10-alcohol is used in the synthesis of complex molecules, particularly in bioconjugation and drug delivery systems. Featuring a propargyl group that enables efficient click chemistry reactions, it serves as a linker or spacer in the development of targeted therapies, facilitating the attachment of therapeutic agents to carriers such as antibodies or nanoparticles. This specialty chemical is also employed in the preparation of hydrogels and other biomaterials to enhance their stability and functionality. Additionally, it is applied in the modification of surfaces for biomedical devices, improving biocompatibility and performance.