Description
Nystatin and Triamcinolone Acetonide Ointment, USP for dermatologic use contain the antifungal agent nystatin and the synthetic corticosteroid triamcinolone acetonide.
Nystatin, USP is a polyene antimycotic obtained from Streptomyces noursei. It is a yellow to light tan powder with a cereallike odor, slightly soluble in methanol, and freely soluble in dimethylformamide, dimethyl sulfoxide, and practically insoluble in n-propyl alcohol, n-bulyl alcohol,water, alcohol, chloroform, ether.
Structural formula:
Triamcinolone acetonide, USP is designated chemically as 9-fluoro-11β,16a, 17, 21-tetrahydroxypregna-1, 4-diene-3, 20-dione cyclic 16, 17-acetal with acetone. The white to cream crystalline powder has a slight odor, is practically insoluble in water, and sparingly soluble in dehydrated alcohol, chloroform, and slightly soluble in methanol.
Structural formula:
Each gram of Nystatin and Triamcinolone Acetonide Ointment, USP provides 100,000 USP Nystatin units and 1 mg Triamcinolone Acetonide in an ointment base of mineral oil and white petrolatum.