1-(2-Pyridinylmethyl)-2,3-piperazinedione

1-(2-PYRIDYLMETHYL)-3-(2,6-XYLYL)UREA

1-(2,2-DIMETHYL-PROPYL)-3-(2-FLUORO-PHENYL)-THIOUREA

1-(2,2,2-TRIPHENYL-ETHYL)-3-TRITYL-UREA

1-(2,3-DICHLOROPHENYL)-3-(2-ETHYL-6-METHYLPHENYL)UREA

1-(2,3-DICHLOROPHENYL)-3-ETHYLUREA

1-(2,5-DIFLUOROPHENYL)-3-(2,4-DIMETHOXYPHENYL)UREA

1-(2,5-DIMETHOXYPHENYL)-1-ISOPROPYLUREA

1-(2,5-DIMETHOXYPHENYL)-3-(4-IODOPHENYL)UREA

1-(2,5-DIMETHOXYPHENYL)-3-PHENYL-2-THIOUREA

1-(2,6-DICHLOROPHENYL)-3-METHYLUREA

1-(2,6-DIETHYLPHENYL)-3-(2,4,5-TRICHLOROPHENYL)UREA

1-(2,6-DIISOPROPYL-PHENYL)-3-(4-ISOPROPYL-PHENYL)-UREA

1-(2,6-DIISOPROPYLPHENYL)-3-PROPYLUREA

1-(2,6-DIMETHYLPHENYL)-3-(3-NITROPHENYL)UREA