1-(2,5-DIMETHYL-PHENYL)-PIPERAZIN-2-ONE 2-Piperazinone, 1-(2,4-difluorophenyl)- 1-(2,3-DIMETHYL-PHENYL)-PIPERAZIN-2-ONE 1-(4-TRIFLUOROMETHOXY-PHENYL)-PIPERAZIN-2-ONE 2-Piperazinone, 1-(2,3-difluorophenyl)- 2-Piperazinone, 1-(3,5-difluorophenyl)- 1-(2,4-DIMETHYL-PHENYL)-PIPERAZIN-2-ONE 1-(3-TRIFLUOROMETHYL-PHENYL)-PIPERAZIN-2-ONE 1-(2-TRIFLUOROMETHYL-PHENYL)-PIPERAZIN-2-ONE 1-(3,4-DIFLUORO-PHENYL)-PIPERAZIN-2-ONE 1-(3-METHYLPHENYL)PIPERAZIN-2-ONE 1-(3-Bromo-phenyl)-piperazin-2-one 1-(4-METHOXY-PHENYL)-PIPERAZIN-2-ONE Piperazinone, 1-(2-methylphenyl)- (9CI) 1-(3,4-DIMETHYLPHENYL)-6,6-DIMETHYLPIPERAZIN-2-ONE 1-(3,4-DIMETHYL-PHENYL)-PIPERAZIN-2-ONE