Ethyl glutaryl chloride is primarily used as a key intermediate in the synthesis of various organic compounds. It plays a significant role in the production of pharmaceuticals, where it is utilized to create active pharmaceutical ingredients (APIs) and other drug-related molecules. Its reactive acyl chloride group makes it valuable for forming esters, amides, and other derivatives, which are essential in medicinal chemistry.

In the field of polymer chemistry, it serves as a building block for the development of specialty polymers and resins. These materials are often employed in coatings, adhesives, and advanced materials with specific performance characteristics. Additionally, it is used in the synthesis of fine chemicals and agrochemicals, contributing to the creation of pesticides, herbicides, and other agricultural products. Its versatility in chemical reactions makes it a valuable component in research and industrial applications.