sodium (S)-1-((S)-2-(((R)-1-carboxylato-3-phenylpropyl)amino)propanoyl)pyrrolidine-2-carboxylate ; (2S)-1-[(2S)-2-[[(1R)-1-Carboxy-3-phenylpropyl]amino]propanoyl]pyrrolidine-2-carboxylic acid disodium salt ; Enalaprilat EP Impurity C ( Di-Sodium Salt) ; Enalaprilat SSR Di-Sodium Isomer