Used as a key intermediate in organic synthesis, particularly in the preparation of conjugated enynes and heterocyclic compounds. Its alkyne functionality allows for participation in coupling reactions such as Sonogashira and Click chemistry, making it valuable in pharmaceutical and agrochemical research. The diethoxy group can be hydrolyzed to yield aldehyde derivatives, enabling further transformation into complex molecules. Commonly employed in the development of functional materials and bioactive compounds due to its versatile reactivity.