Used primarily as an intermediate in the synthesis of pharmaceuticals and agrochemicals. Its reactivity allows for the introduction of the 3-bromothiophene moiety into more complex molecules, particularly in the development of bioactive compounds. Commonly employed in the preparation of thiophene-based derivatives that exhibit antimicrobial, antifungal, or antitumor activities. Also utilized in the manufacture of organic semiconductors and functional materials due to the electronic properties of the thiophene ring. Its acyl chloride group facilitates easy linkage to amines or alcohols, making it valuable in building block chemistry for drug discovery and material science.