SPL Set ID: f458d574-7b5b-44f1-86be-8b18880dc67f

The active ingredient in Mesalamine suppositories, USP 1000 mg is mesalamine, also known as mesalazine or 5-aminosalicylic acid (5-ASA). Chemically, mesalamine is 5-amino-2-hydroxybenzoic acid, and is classified as an aminosalicylate. Each Mesalamine suppository, USP contains 1000 mg of mesalamine, USP (micronized) in a base of hard fat. Mesalamine, USP (micronized) are light tan to pink colored, needle-shaped crystals. Color may darken on exposure to air. It is odorless or may have a slight characteristic odor. It is slightly soluble in water; very slightly soluble in methanol, in dehydrated alcohol, and in acetone; practically insoluble in n-butyl alcohol, in chloroform, in ether, in ethyl acetate, in n-hexane, in methylene chloride, and in n-propyl alcohol; soluble in dilute hydrochloric acid and in dilute alkali hydroxides. The molecular formula is C 7 H 7 NO 3 , representing a molecular weight of 153.14. The structural formula is: Mesalamine rectal suppository