4-(2-Hydroxybenzylidene)-1,2-diphenyl-3,5-pyrazolidinedione

4-(2-Hydroxyethyl)-4-azatricyclo[5.2.1.0(2,6)]dec-8-ene-3,5-dione

4-(2-METHOXY-5-METHYLPHENYL)-1-(1-NAPHTHYLMETHYLENE)-3-THIOSEMICARBAZIDE

4-(2-THIENYLMETHYLENEAMINO)BENZOIC ACID

4-(2,3-Dihydro-1,4-benzodioxin-6-yl)-4-oxobutanoic acid

4-(2,3-dimethoxyphenyl)-1-methyl-4-piperidinecarbonitrile

4-(2,4-DI-TERT-PENTYLPHENOXY)-N-(4-(FORMYLHYDRAZINO)PHENYL)-BUTYRAMIDE

4-(2,4-DICHLOROBENZOYL)-MORPHOLINE

4-(2,4-DIFLUOROPHENYL)-1-(2,4-DIFLUOROBENZOYL)SEMICARBAZIDE

4-(2,4-DIMETHYL-PHENYL)-1-PHENYL-1,3-DIHYDRO-IMIDAZOLE-2-THIONE

4-(2,4,6-TRINITROPHENYL)MORPHOLINE

4-(2,5-DIMETHOXY-BENZYLIDENE-HYDRAZINOCARBONYL)-1-(2-HO-ET)-PYRIDINIUM, CHLORIDE

4-(2,6-DICHLOROPHENYL)-1-PHENYLSEMICARBAZIDE

4-(2,6-DIMETHYL-4-(2-ISOINDOLINYL)PHENYLAZO)BENZONITRILE

4-(3-((4-CHLOROBENZYL)OXY)PHENYL)-2,6-DIMETHYL-1,4-DIHYDRO-3,5-PYRIDINEDICARBONITRILE