European Pharmacopoeia (EP) Reference Standard Synonym(s): (2 S ,3a S ,6a S )-1-{(2 S )-2-{[(1 S )-1-(Methoxycarbonyl)-3-phenylpropyl]amino}-1-oxopropyl}octahydrocyclopenta[b]pyrrole-2-carboxylic acid; Ramipril methyl ester Empirical Formula: C22H30N2O5...