SPL Set ID: 5e5038ea-9214-469b-8174-e5787be7a801

Silodosin, a selective antagonist of alpha-1 adrenoreceptors. The chemical name of silodosin is 1-(3-Hydroxypropyl)-5-[(2 R )-2-({2-[2-(2,2,2­-trifluoroethoxy)phenoxy]ethyl}amino)propyl]-2,3-dihydro-1 H -indole-7-carboxamide and the molecular formula is C 25 H 32 F 3 N 3 O 4 with a molecular weight of 495.53. The structural formula of silodosin is: Silodosin is a white to pale yellowish white powder that melts at approximately 105 to 109°C. It is freely soluble in ethanol, methanol, N,N-dimethylformamide and practically insoluble in water and 1-Octanol. Each silodosin 8 mg capsule and 4 mg capsule for oral administration contains 8 mg silodosin and 4 mg silodosin respectively and the following inactive ingredients: hydrogenated vegetable oil, mannitol, pregelatinized starch (maize) and sodium lauryl sulfate. In addition, the empty hard gelatin capsules contain gelatin and titanium dioxide. The capsules are imprinted with edible ink containing black iron oxide, potassium hydroxide, propylene glycol, shellac and strong ammonia solution. Silodosin Chemical Structure