Used extensively in bioconjugation and chemical biology, this compound serves as a linker to attach molecules like drugs, peptides, or proteins to other entities such as nanoparticles or surfaces. Its PEG spacer enhances solubility and reduces immunogenicity, making it valuable in drug delivery systems. It is also employed in the development of antibody-drug conjugates (ADCs) and targeted therapies, where precise molecular attachment is critical. Additionally, it finds utility in surface modification for biosensors and diagnostic tools, improving biocompatibility and functionality.