Crystal structure of [(2S)-1-[(3S)-3-carboxy-6,7-dimethoxy-1,2,3,4-tetra­hydroisoquinolin-2-yl]-1-oxopropan-2-yl][(2S)-1-ethoxy-1-oxo-4-phenylbutan-2-yl]azanium chloride acetonitrile monosolvate

The title compound (trivial name moexipril hydro­chloride) crystallizes as the aceto­nitrile monosolvate, C₂₇H₃₅N₂O₇⁺·Cl⁻·C₂H₃N, with the salt comprising a U-shaped cation and a chloride anion. The conformation of the cation is stabilized by a weak intra­molecular N⁺—H...O hydrogen bond and the tetra­hydro­pyridine ring adopts a boat conformation. The dihedral angle between the planes of the benzene rings is 85.6 (1)°. In the crystal, the cations and anions form tight ionic pairs by strong inter­molecular O—H...Cl hydrogen bonds. C—H...Cl and C—H...N hydrogen bonds link these ionic pairs and the aceto­nitrile solvate mol­ecules into puckered layers parallel to (100).