Sulfin, sulfinpyrazone, is a uricosuric agent available as 100-mg tablets for oral administration. Its chemical name is 1,2-diphenyl-4-[2-(phenylsulfinyl)ethyl]-3,5-pyrazolidinedione.
Sulfinpyrazone USP is a white to off-white powder practically insoluble in water and in solvent hexane, soluble in alcohol and in acetone and sparingly soluble in diluted alkali. Its molecular weight is 404.48.
Excipients/Inactive Ingredients: Colloidal silicon dioxide, gelatin, lactose, magnesium stearate, cornstarch, stearic acid, and talc.