Used in organic synthesis as an intermediate for pharmaceuticals and bioactive compounds. Its alkyne and carboxylic acid functional groups allow for click chemistry applications, particularly in the development of enzyme inhibitors and peptide mimetics. Commonly employed in research settings to label or modify biomolecules via copper-catalyzed azide-alkyne cycloaddition (CuAAC) reactions. Also explored in the design of proteolysis-targeting chimeras (PROTACs) due to its ability to link targeting moieties with E3 ligase ligands.