Used primarily as a reactive intermediate in organic synthesis, particularly in pharmaceutical and agrochemical manufacturing. Its alkyne and ester functionalities make it suitable for click chemistry reactions, such as copper-catalyzed azide-alkyne cycloaddition (CuAAC), enabling efficient construction of complex molecules. Commonly employed in the development of functionalized ethers and as a building block for bioactive compounds. Also finds use in polymer chemistry for modifying resin properties and introducing alkyne handles for further conjugation.