Similar names: Ethyl (2S)-2-[(3S,8aS)-3-Methyl-1,4-dioxooctahydropyrrolo[1,2-a]pyrazin-2-yl]-4-phenylbutanoate; Enalapril Maleate Imp. D (EP); Enalapril Diketopiperazine; Pyrrolo[1,2-a]pyrazine-2(1H)-acetic acid, hexahydro-3-methyl-1,4-dioxo-α-(2-phenylethyl)-, ethyl ester, (αS,3S,8aS)-; Pyrrolo[1,2-a]pyrazine-2(1H)-acetic acid, hexahydro-3-methyl-1,4-dioxo-α-(2-phenylethyl)-, ethyl ester, [3S-[2(R*),3α,8aβ]]-; Ethyl (αS,3S,8aS)-hexahydro-3-methyl-1,4-dioxo-α-(2-phenylethyl)pyrrolo[1,2-a]pyrazine-2(1H)-acetate; Enalapril DKP