| abstract |
The invention relates to a method for producing crystalline forms of optical enantiomers of modafinil, comprising the steps of: i) dissolving one of the optical enantiomers of modafinil in a solvent other than ethanol; ii) crystallization of the enantiomer of modafinil; iii) isolation of the obtained crystalline form of the enantiomer of modafinil. The invention also relates to a process for the preparation of optical enantiomers of modafinil. |