Used primarily as an intermediate in organic synthesis, this compound is valuable in the preparation of pharmaceuticals and agrochemicals. Its reactive acyl chloride group enables it to form amide and ester derivatives, making it useful in constructing complex molecules. It is often employed in the synthesis of active pharmaceutical ingredients (APIs) where a five-membered cyclic ether-derived moiety is required. Additionally, it serves in peptide coupling reactions and the development of specialty polymers due to its ability to introduce functionalized cyclic structures. Its role as a derivatizing agent also extends to analytical chemistry for modifying carboxylic acids and alcohols in sample preparation.