Used in bioconjugation and chemical synthesis, this compound serves as a linker or spacer in the development of drug delivery systems. Its propargyl group enables click chemistry reactions, facilitating the attachment of various molecules like peptides, proteins, or drugs. The PEG3 chain enhances solubility and reduces immunogenicity, making it suitable for biomedical applications. It is also utilized in the creation of antibody-drug conjugates (ADCs) and targeted therapies, improving the precision and efficacy of treatments. Additionally, it finds use in surface modification and functionalization of nanomaterials for diagnostic and therapeutic purposes.