Used as a key intermediate in organic synthesis, particularly in pharmaceutical and agrochemical manufacturing. Its alkyne and ester functionalities allow for versatile reactivity, including click chemistry via copper-catalyzed azide-alkyne cycloaddition (CuAAC), making it valuable in constructing complex molecules. Commonly employed in the development of bioactive compounds and functionalized polymers. The tert-butyl ester group offers stability during reactions and can be easily deprotected under mild acidic conditions, enabling selective transformations in multi-step syntheses.