Used as a building block in organic synthesis, particularly in the preparation of long-chain alkynes and functionalized hydrocarbons. It serves as a reagent in coupling reactions, including Sonogashira and Glaser couplings, to construct carbon-carbon bonds in pharmaceuticals and agrochemicals. Also employed in surface modification processes, where it can form self-assembled monolayers on metal surfaces, providing hydrophobic coatings or corrosion resistance. Its terminal alkyne group enables click chemistry applications, useful in material science and polymer modification. Additionally, it acts as a precursor in the synthesis of surfactants, lubricants, and specialty chemicals requiring extended hydrophobic chains.