European Pharmacopoeia (EP) Reference Standard
Synonym(s): Ethyl (2S)2-[(3S,5aS,8aS, 9aS)-3-methyl-1,4-dioxodecahydro-1H-cyclopenta[e]pyrrolo[1,2-a]pyrazin-2-yl]-4-phenylbutanoate; Ramipril diketopiperazine
Empirical Formula: C23H30N2O4
Formula Weight: 398.50
Linear Formula: C23H30N2O4