Used as a key intermediate in the synthesis of angiotensin II receptor blockers (ARBs), such as valsartan and losartan, which are widely prescribed for hypertension and cardiovascular diseases. Its tetrazole-aniline structure provides essential pharmacophore features that enhance binding to the angiotensin II receptor. Also employed in the development of agrochemicals and coordination chemistry as a ligand for metal complexes. Additionally, finds use in materials science for constructing nitrogen-rich polymers and energetic materials due to the stability and high nitrogen content of the tetrazole ring.