Used in organic synthesis as a building block for creating complex molecules, particularly in pharmaceutical research. It serves as a key intermediate in the development of bioactive compounds, including potential drugs targeting neurological disorders. Its ethynyl and carboxylic acid functional groups allow for versatile chemical modifications, enabling the creation of derivatives with specific biological activities. Additionally, it is employed in materials science for designing functional polymers and coordination complexes with unique electronic properties. Its applications also extend to catalysis, where it acts as a ligand in metal-catalyzed reactions.