Ramipril is a 2-aza-bicyclo
[3.3.0]-octane-3-carboxylic acid derivative. It is a white,
crystalline substance soluble in polar organic solvents and
buffered aqueous solutions. Ramipril melts between 105°C
The CAS Registry Number is 87333-19-5. Ramipril's chemical
name is (2S,3aS,6aS)-1[(S)-N-[(S)-1-Carboxy-3-phenylpropyl]alanyl]octahydrocyclopenta[b]pyrrole-2-carboxylic
acid, 1-ethyl ester.
Its empiric formula is C23H32N2O5,
and its molecular weight is 416.5.