SPL Set ID: f2f325b8-f33d-3b93-e053-2995a90aa660

Ramipril is a 2-aza-bicyclo [3.3.0]-octane-3-carboxylic acid derivative. It is a white to almost white crystalline powder soluble in polar organic solvents and buffered aqueous solutions. Ramipril melts between 105° to 112°C. The CAS Registry Number is 87333-19-5. Ramipril’s chemical name is (2 S ,3a S ,6a S )-1[( S )- N -[( S )-1-Carboxy-3-phenylpropyl] alanyl] octahydrocyclopenta [ b ]pyrrole-2-carboxylic acid, 1-ethyl ester. The inactive ingredients present are pregelatinized starch and silica hydrophobic, colloidal anhydrous. The empty hard gelatin capsule shells contain gelatin, sodium lauryl sulfate, and titanium dioxide. In addition, the 1.25 mg capsule shell contains iron oxide yellow, 2.5 mg capsule shell contains D&C yellow 10 and FD&C red 40, the 5 mg capsule shell contains FD&C blue 1 and FD&C red 40, and the 10 mg capsule shell contains FD&C blue 1. The capsules are printed with edible ink containing black iron oxide and shellac. The structural formula for ramipril is: Its molecular formula is C 23 H 32 N 2 O 5 and its molecular weight is 416.5. Ramiprilat, the diacid metabolite of ramipril, is a non-sulfhydryl ACE inhibitor. Ramipril is converted to ramiprilat by hepatic cleavage of the ester group. Chemical Structure