s 1 n 1 ethoxycarbonyl 3 phenylpropyl l alanyl l proline, s 1 s 2 1 s ethoxycarbonyl 3 phenyl propylamino propionyl pyrrolidine 2 carboxylic acid, 1 n s 1 carboxy 3 phenylpropyl l alanyl l proline 1 ethyl ester
For the treatment of essential or renovascular hypertension and symptomatic congestive heart failure. It may be used alone or in combination with thiazide diuretics.