Used as a key intermediate in the synthesis of angiotensin II receptor antagonists, particularly in the production of sartan-class antihypertensive drugs such as valsartan and losartan. The tetrazole ring serves as a bioisostere for the carboxylic acid group, enhancing metabolic stability and improving oral bioavailability. Its brominated thiophene moiety allows for further functionalization via cross-coupling reactions, making it valuable in medicinal chemistry for building complex drug molecules. Also employed in the development of new heterocyclic compounds with potential biological activity, including antimicrobial and anti-inflammatory agents.