preferred pharmaceuticals inc. usa - Medication Listings

Eszopiclone is a nonbenzodiazepine hypnotic agent that is a pyrrolopyrazine derivative of the cyclopyrrolone class. The chemical name of eszopiclone is (+)-4-Methylpiperazine-1-carboxylic acid 6-(5-chloro-2-pyridyl)-7-oxo-6, 7-dihydro-5 H-pyrrolo [3,4-b]pyrazin-5(S)-yl ester. Its molecular weight is 388.81 g/mol, and its empirical formula is C 17 H 17 ClN 6 O 3 . Eszopiclone has a single chiral center with an ( S )-configuration. It has the following chemical structure: Eszopiclone is a white to light yellow powder. Eszopiclone is slightly soluble in acetone, methanol and alcohol; practically insoluble in water. Eszopiclone is formulated as film-coated tablets for oral administration. Eszopiclone Tablets, USP contain 1 mg, 2 mg, or 3 mg eszopiclone and the following inactive ingredients: anhydrous lactose, colloidal silicon dioxide, croscarmellose sodium, dibasic calcium phosphate anhydrous, hypromellose, lactose monohydrate, magnesium stearate, microcrystalline cellulose, polyethylene glycol, titanium dioxide, and triacetin. In addition, both the 1 mg and 3 mg tablets contain FD&C Blue #2. eszopiclone-chemical-structure

Fluconazole, USP the first of a new subclass of synthetic triazole antifungal agents, is available as tablets for oral administration. Fluconazole, USP is designated chemically as 2,4-difluoro-1 ’ ,1 ’ -bis(1 H -1,2,4-triazol-1-ylmethyl)benzyl alcohol with an empirical formula of C 13 H 12 F 2 N 6 O and molecular weight of 306.27. The structural formula is: Fluconazole, USP is a white or almost white crystalline powder which is freely soluble in methanol; soluble in alcohol and in acetone; sparingly soluble in isopropanol and in chloroform; slightly soluble in water; very slightly soluble in toluene. Fluconazole Tablets, USP contain 50 mg, 100 mg, 150 mg, or 200 mg of fluconazole, USP and the following inactive ingredients: croscarmellose sodium, dibasic calcium phosphate anhydrous, FD&C Red No. 40, magnesium stearate, microcrystalline cellulose and povidone K-30. structure

Nystatin and Triamcinolone Acetonide Cream, USP for dermatologic use contains the antifungal agent nystatin, USP and the synthetic corticosteroid triamcinolone acetonide, USP. Nystatin, USP is a polyene antimycotic obtained from Streptomyces noursei . It is a yellow to light tan, hygroscopic powder, having a bitter taste and an odor suggestive of cereals. It is freely soluble in dimethylformamide and dimethyl sulfoxide; slightly to sparingly soluble in methanol, n-propyl alcohol, and n-butyl alcohol; practically insoluble in water and alcohol; insoluble in chloroform and ether. Structural formula: C 47 H 75 NO 17 ; MW = 926.11 g/mol Triamcinolone acetonide, USP is designated chemically as pregna-1, 4-diene-3,20-dione,9-fluoro-11,21-dihydroxy-16,17-[(1-methylethylidene)bis(oxy)]-,(11β,16α)-9-fluoro-11β,16α,17,21-tetrahydroxypregna-1,4-diene-3,20-dione cyclic 16, 17-acetal with acetone. The white to cream colored, crystalline powder, having not more than a slight odor, is practically insoluble in water, sparingly soluble in dehydrated alcohol, in chloroform and in methanol. Structural formula: C 24 H 31 FO 6 ; MW = 434.50 g/mol Nystatin and Triamcinolone Acetonide Cream, USP is a soft, smooth yellow color cream. Each gram provides 100,000 USP Nystatin units and 1 mg Triamcinolone Acetonide, USP in a cream base with dried aluminum hydroxide gel, glyceryl monostearate, methylparaben, polyethylene glycol 400 monostearate, polyoxyl 20 cetostearyl ether, polysorbate-60, propylene glycol, propylparaben, purified water, simethicone emulsion, sorbic acid, sorbitol, titanium dioxide, and white petrolatum. nystatin-image triamcinolone-structure