Tolterodinedrug info

11. DESCRIPTION Tolterodine tartrate extended-release capsules, USP contain tolterodine tartrate USP. The active moiety, tolterodine, is a muscarinic receptor antagonist. The chemical name of tolterodine tartrate is (R)-N,N-diisopropyl-3-(2-hydroxy-5methylphenyl)-3-phenylpropanamine L-hydrogen tartrate. The empirical formula of tolterodine tartrate is C 26 H 37 NO 7, Its structure is: Tolterodine tartrate is a white, crystalline powder with a molecular weight of 475.6. The pK a value is 9.87 and the solubility in water is 12 mg/mL. It is soluble in methanol, slightly soluble in ethanol, and practically insoluble in toluene. The partition coefficient (Log D) between n-octanol and water is 1.83 at pH 7.3. Tolterodine tartrate extended-release capsules 4 mg for oral administration contains 4 mg of tolterodine tartrate. Inactive ingredients are colloidal silicon dioxide, dibutyl sebacate, ethylcellulose, FD & C Blue no.2, gelatin, hypromellose, hypromellose phthalate, sucrose, talc and titanium dioxide. Tolterodine tartrate extended-release capsules 2 mg for oral administration contains 2 mg of tolterodine tartrate, and the following Inactive ingredients are colloidal silicon dioxide, dibutyl sebacate, ethylcellulose, FD & C Blue no.2, gelatin, hypromellose, hypromellose phthalate, iron oxide yellow, sucrose, talc and titanium dioxide. Both the 2 mg and 4 mg capsule strengths are imprinted with a pharmaceutical grade printing ink that contains ammonium hydroxide, iron oxide black, shellac, potassium hydroxide, propylene glycol and titanium dioxide. Meets USP Dissolution Test 3. tolterodine-01