SPL Set ID: fd382540-b390-4e86-a94a-988ea89c93a8
1 drug(s) with this SPL Set ID
Zileuton is an orally active inhibitor of 5-lipoxygenase, the enzyme that catalyzes the formation of leukotrienes from arachidonic acid. Zileuton has the chemical name (±)-1-(1-Benzo[b]thien-2-ylethyl)-1-hydroxyurea and the following chemical structure: Zileuton has the molecular formula C 11 H 12 N 2 O 2 S and a molecular weight of 236.29. It is a racemic mixture (50:50) of R(+) and S(-) enantiomers. Zileuton is a practically odorless, white, crystalline powder that is soluble in methanol and ethanol, slightly soluble in acetonitrile, and practically insoluble in water and hexane. The melting point ranges from 144.2°C to 145.2°C. Zileuton Extended-Release Tablets for oral administration are bi-layer tablets comprising of an immediate-release layer and extended-release layer. Zileuton Extended-Release Tablets are oval shaped, biconvex tablets debossed with “656” on one side and “P” on the other side. Each tablet contains 600 mg of zileuton and the following inactive ingredients: colloidal silicon dioxide, crospovidone, hydroxypropyl cellulose, hypromellose, magnesium stearate, mannitol, microcrystalline cellulose, partially pregelatinized maize starch, polyethylene glycol 400, sodium lauryl sulfate, sodium starch glycolate, titanium dioxide, yellow iron oxide. structure