Optical isomers of 4-(5-fluoro-2,3-dihydro-1H-inden-2-yl)-1H-imidazole and pharmaceutically acceptable salts thereof, there use and preparation are described. Both isomers are potent in the treatment of cognitive disorders.
ENANTIOMERS OF 4-(5-FLUORO-2,3-DIHYDRO-1H-INDEN-2YL)-1H- IMIDAZOLE