Used in pharmaceutical synthesis as a key intermediate for angiotensin II receptor antagonists, particularly in the development of sartan-class antihypertensive drugs. The tetrazole ring mimics the carboxylic acid group, enhancing metabolic stability and bioavailability. Commonly employed in drug discovery for building blocks requiring polar, acidic functionality with improved pharmacokinetic properties. Also utilized in coordination chemistry as a ligand due to nitrogen-rich structure capable of metal binding.