Synonyms: Enalapril Maleate Imp. B (EP), Quinapril Hydrochloride Imp. B (EP), Ramipril Imp. F (EP),(2S)-2-[[(1S)-1-(Ethoxycarbonyl)-3-phenylpropyl]amino]propanoic Acid, N-[(S)-1-Ethoxycarbonyl-3-phenylpropyl]-L-alanine, N-[1(S)-Ethoxycarbonyl-3-phenylpropyl]-L-alanine, Benzenebutanoic acid, α-[[(1S)-1-carboxyethyl]amino]-, 1-ethyl ester, (αS)-, Benzenebutanoic acid, α-[(1-carboxyethyl)amino]-, monoethyl ester, [S-(R*,R*)]-, Benzenebutanoic acid, α-[[(1S)-1-carboxyethyl]amino]-, monoethyl ester, (αS)- (9CI)