Source: FDA, National Drug Code (US) Revision Year: 2020
NOURIANZ contains istradefylline, an adenosine receptor antagonist, which has a xanthine derivative structure. The chemical name is (E)8(3,4-dimethoxystyryl)-1,3-diethyl-7-methyl-3,7-dihydro-1H-purine-2,6-dione. Its molecular formula is C20H24N4O4. The molecular weight is 384.43.
Istradefylline has the following structural formula:
Istradefylline is a light yellow-green crystalline powder. Istradefylline has a dissociation constant (pKa) of 0.78. The aqueous solubility of istradefylline is ~0.5 µg/mL across the physiological pH range and 0.6 µg/mL in water.
NOURIANZ tablets are intended for oral administration only. Each tablet contains 20 mg or 40 mg of istradefylline and the following inactive ingredients: crospovidone, lactose monohydrate, magnesium stearate, microcrystalline cellulose, and polyvinyl alcohol. The film coating contains hypromellose, lactose monohydrate, polyethylene glycol 3350, titanium dioxide, triacetin, and the following dyes: iron oxide red and iron oxide yellow. Carnauba wax is used for polishing.
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NOURIANZ (istradefylline) tablets are available as: 20 mg Tablets: Peach-colored, pillow-shaped, film-coated tablets with “20” debossed on one side. Bottle of 90: NDC 42747-602-90 40 mg Tablets: Peach-colored, almond-shaped, film-coated tablets with “40” debossed on one side. Bottle of 90: NDC 42747-604-90 |
| Drug | Countries | |
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| NOURIANZ | United States |
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