Used in organic synthesis as an intermediate for pharmaceuticals and fine chemicals. Its alkyne functionality allows participation in click chemistry reactions, particularly copper-catalyzed azide-alkyne cycloaddition (CuAAC), making it valuable in drug discovery and bioconjugation. Employed in the preparation of functionalized molecules for materials science and medicinal chemistry due to its reactive triple bond and carboxylic acid group. Also serves as a building block in synthesizing complex natural products and enzyme inhibitors.