Used as a key intermediate in organic synthesis, particularly in the preparation of pharmaceuticals and agrochemicals. Its alkyne functionality allows participation in click chemistry reactions, such as copper-catalyzed azide-alkyne cycloaddition (CuAAC), making it valuable in drug discovery and bioconjugation. Also employed in the synthesis of sulfur-containing heterocycles and functional materials. Its reactivity enables modification of polymers and development of specialty chemicals with tailored properties.