Used as a key intermediate in organic synthesis, particularly in pharmaceuticals and agrochemicals. Its alkyne and carboxylic acid functional groups allow for versatile reactivity, including click chemistry via copper-catalyzed azide-alkyne cycloaddition (CuAAC). Commonly employed in the preparation of bioconjugates, drug delivery systems, and functionalized polymers. Also utilized in the development of probes and labeling agents in biochemical research due to the ability to introduce specific modifications through the terminal alkyne moiety.