(S)-1-(2-Chloro-phen-yl)-2-oxocyclo-hexan-1-aminium d-tartrate.

In the title compound, C12H15ClNO+·C4H5O6−, the cyclo­hexa­none ring adopts a chair conformation. The benzene ring is significantly twisted so that it is in an almost perpendicular position to the C—N bond with a CAr—CAr—C—N torsion angle of −96.5 (5)°. Intermolecular N—H⋯O and O—H⋯O hydrogen bonds are observed in the crystal structure.