Used in pharmaceutical synthesis as an intermediate for active pharmaceutical ingredients (APIs), particularly in the development of kinase inhibitors and other targeted therapies. Its structure supports conjugation in peptide-like chains and enables solubility and stability in drug formulations. Commonly employed in research settings for modifying bioactive molecules to enhance blood-brain barrier penetration or metabolic stability. Also utilized in the preparation of proteolysis-targeting chimeras (PROTACs) due to its bifunctional linker capabilities.