SPL Set ID: 93f2d724-5a54-4721-b04a-e46bc764607b
1 drug(s) with this SPL Set ID
Doxazosin tablets, USP are a quinazoline compound that is a selective inhibitor of the alpha 1 subtype of alpha-adrenergic receptors. The chemical name of doxazosin mesylate is 1-(4-Amino-6,7-dimethoxy-2-quinazolinyl)-4-(1,4-benzodioxan-2-ylcarbonyl) piperazine monomethanesulfonate. The molecular formula for doxazosin mesylate is C 23 H 25 N 5 O 5 • CH 4 O 3 S and the molecular weight is 547.6. It has the following structure: Doxazosin mesylate, USP is freely soluble in dimethylsulfoxide, soluble in dimethylformamide, slightly soluble in methanol, ethanol, and water (0.8% at 25°C), and very slightly soluble in acetone and methylene chloride. Doxazosin tablets are available as colored tablets for oral use and contains doxazosin mesylate equivalent to 1 mg (white to off white), 2 mg (pink), 4 mg (blue) and 8 mg (purple) of doxazosin as the free base. The inactive ingredients for all tablets are anhydrous lactose, colloidal silicon dioxide, magnesium stearate, microcrystalline cellulose, sodium lauryl sulfate and sodium starch glycolate (Type A). The 2 mg and 8 mg tablets also contain D&C Red No. 30 Aluminum Lake. The 4 mg and 8 mg tablets also contain FD&C Blue No. 2 Aluminum Lake. Chemical Structure