USP drug classification [BR:br08302] Respiratory Tract/Pulmonary Agents Antileukotrienes Zileuton D00414 Zileuton (USP/INN) Target-based classification of drugs [BR:br08310] Enzymes Oxidoreductases (EC1) Dioxygenases [EC:1.13.11.-] ALOX5 [HSA:240] [KO:K00461] D00414 Zileuton (USP/INN) <US>