Used primarily as an intermediate in organic synthesis, especially in the preparation of pharmaceuticals and agrochemicals. Its structure contains both ethynyl and nitro groups, making it suitable for click chemistry and palladium-catalyzed coupling reactions. The electron-withdrawing nitro and fluoro substituents enhance reactivity in nucleophilic aromatic substitution, allowing for the introduction of various functional groups. It is also employed in the development of fluorescent probes and functional materials due to its ability to undergo cycloaddition reactions and form conjugated systems.