Febuxostat; 2-(3-cyano-4-isobutoxyphenyl)-4-methylthiazole-5-carboxylic acid; CAS No.: 144060-53-7; This thiazole-carboxylic acid derivative represents ChemShuttle s various organic chemicals for metabolic disease targets. The isobutoxy-phenyl-thiazole scaffold mimics xanthine oxidase inhibitors, while the 3-cyano group enhances electronic interactions. Our synthesis leverages regioselective thiazole cyclization and Ullmann couplings for aryl ether formation. As a chemical synthesis company, we provide milligram-to-kilogram scale production with strict control over polymorphic forms, crucial for crystallography-driven drug design.