This compound is primarily utilized in the field of bioconjugation and pharmaceutical research. It serves as a versatile linker molecule, enabling the attachment of various functional groups or therapeutic agents to biomolecules such as proteins, peptides, or antibodies. The presence of the PEG (polyethylene glycol) chain enhances solubility and stability, making it suitable for drug delivery systems. The propargyl group allows for click chemistry reactions, facilitating efficient and selective conjugation. Additionally, the t-butyl ester group provides protection for carboxylic acids during synthesis, which can be deprotected when needed. Its applications extend to the development of targeted therapies, diagnostic tools, and advanced materials in nanotechnology.