This chemical is primarily used as an intermediate in organic synthesis, particularly in the production of pharmaceuticals and agrochemicals. It is often employed in the preparation of active pharmaceutical ingredients (APIs) due to its ability to introduce the 4-chlorobutyryl group into molecules, which can be crucial for biological activity. Additionally, it serves as a key reagent in the synthesis of various fine chemicals, including polymers and specialty compounds. Its reactive acyl chloride group makes it valuable for creating esters, amides, and other derivatives, which are essential in developing new materials and compounds with specific functional properties.