Used primarily as an intermediate in organic synthesis, especially in the pharmaceutical and agrochemical industries. It participates in acylation reactions to introduce the 4-methylvaleryl group into molecules, aiding in the creation of active ingredients in drugs and pesticides. Its reactivity makes it valuable for forming ketones, esters, and amides when reacted with nucleophiles like alcohols or amines. Also employed in the preparation of fragrances and flavoring agents due to its ability to form ester derivatives with pleasant odors. Requires careful handling due to its moisture sensitivity and corrosive nature.