Used as a key intermediate in the synthesis of angiotensin II receptor antagonists, particularly in the preparation of sartan-class antihypertensive drugs such as valsartan and losartan. The tetrazole ring mimics the carboxylic acid group in biological activity, enhancing binding to the angiotensin II receptor. The Cbz-protected amine allows for selective deprotection and further coupling in multi-step syntheses, making it valuable in pharmaceutical development for cardiovascular medications.