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Trityl candesartan; 2-ethoxy-1-((2'-(1-trityl-1H-tetrazol-5-yl)biphenyl-4-yl)methyl)-1H-benzo[d]imidazole-7-carboxylic acid; CAS No.: 139481-72-4; ChemShuttle provides trityl-protected tetrazole acids as building blocks for drug discovery, enabling selective deprotection during API synthesis. The bulky trityl group prevents tetrazole tautomerization during storage. Our process achieves >99.5% protection efficiency through optimized reaction kinetics. This intermediate allows safe handling of reactive tetrazole moieties in large-scale manufacturing environments.