Used as a key intermediate in the synthesis of angiotensin II receptor antagonists, particularly in the production of antihypertensive drugs like valsartan and related sartan-class medications. The tetrazole ring mimics the carboxylic acid group in biological systems, enhancing binding affinity to the angiotensin II receptor. Its amine functionality allows for easy coupling in multi-step organic syntheses, making it valuable in pharmaceutical development. Also employed in medicinal chemistry for building bioisosteres due to the metabolic stability and polarity of the tetrazole moiety.