This chemical is widely used in bioconjugation and click chemistry applications. It serves as a linker for attaching biomolecules, such as proteins, peptides, or antibodies, to other functional groups or surfaces. The T-Boc protecting group allows for controlled deprotection, enabling selective reactions. The PEG4 spacer enhances solubility and reduces steric hindrance, making it ideal for creating stable conjugates in drug delivery systems, diagnostic assays, and targeted therapies. The propargyl group facilitates efficient click chemistry reactions, particularly with azides, for rapid and specific molecular assembly. Its versatility makes it valuable in research and development of biopharmaceuticals and nanomaterials.