A process for separating enantiomeric mixtures by liquid chromatography using a stationary phase that includes cellulose or amylose derivative and a mobile phase that includes methanol and pentane, the concentration of methanol in the mobile phase being greater than one tenth percent by volume and less than the saturation concentration of methanol in the mobile phase, the concentration of pentane being at least that necessary to resolve the enantiomeric mixture into its enantiomers with a resolution at least one and one half times greater than the pentane of the mobile phase is replaced with hexane.