Used as a key intermediate in organic synthesis, particularly in the production of pharmaceuticals and agrochemicals. It plays a crucial role in the formation of thiophene derivatives, which are often incorporated into active compounds for their biological activity. Additionally, it is employed in the development of materials science, aiding in the creation of polymers and coatings with specific electronic or optical properties. Its reactivity as an acyl chloride makes it valuable for introducing functional groups into complex molecules, enhancing their chemical versatility.