Used primarily as an intermediate in organic synthesis, particularly in the pharmaceutical and agrochemical industries. Its reactive acid chloride group allows for easy formation of esters, amides, and ketones, making it valuable in constructing complex molecules. Commonly employed in the preparation of active pharmaceutical ingredients where the chlorohexanoyl moiety acts as a building block. Also utilized in the synthesis of specialty polymers and functionalized compounds requiring a chlorinated alkyl chain. Due to its reactivity, it is handled under controlled conditions to avoid hydrolysis and ensure high yield in coupling reactions.