Used primarily as an intermediate in organic synthesis, chloromethyl decanoate serves in the preparation of ester derivatives for pharmaceuticals and agrochemicals. Its reactive chloromethyl group allows for alkylation and chain extension reactions, making it valuable in building complex molecules. It is also employed in the synthesis of surfactants and functionalized polymers due to its ability to introduce long-chain alkyl groups with reactive handles. Additionally, it finds use in research settings for modifying bioactive compounds and creating specialty esters for flavor and fragrance applications.