Used primarily as a specialty intermediate in organic synthesis, particularly in the preparation of complex molecules requiring alkyne functionality with ester activation. Its structure allows for selective transformations such as coupling reactions, hydrogenation, or cyclization processes in pharmaceutical and agrochemical research. The tert-butyl ester group offers enhanced stability and ease of deprotection under mild acidic conditions, making it valuable in multi-step synthesis where protecting group strategies are critical. It is also employed in the development of functional materials and in medicinal chemistry for building carbon skeletons with defined stereochemistry.