Decanoyl chloride is widely used in organic synthesis as an acylating agent, particularly for introducing the decanoyl group into various compounds. It is commonly employed in the production of esters, amides, and other derivatives, which are essential in the manufacture of fragrances, flavors, and plasticizers. In the pharmaceutical industry, it serves as a key intermediate for synthesizing active pharmaceutical ingredients (APIs) and other bioactive molecules. Additionally, it is utilized in the preparation of surfactants and detergents due to its ability to modify the hydrophobicity of molecules. In research, decanoyl chloride is often used to functionalize surfaces or polymers, enhancing their properties for specific applications. Its reactivity with alcohols and amines makes it a versatile reagent in both industrial and laboratory settings.