4'-CYCLOHEXYLACETOPHENONE

4-CYCLOPROPYL-6-HYDRAZINO-1,3,5-TRIAZIN-2-AMINE

4-DIETHYLAMINOBENZOIC ACID

4-(DIETHYLAMINO)BUTYLAMINE

4-DIETHYLAMINOPHENYL ISOTHIOCYANATE

4-DIMETHYLAMINO-O-TOLUALDEHYDE

4-DIMETHYLAMINO-3,5-DINITROBENZOIC ACID

4-DIMETHYLAMINONAPHTHALENE-1-CARBOXYLIC ACID

4-(DI-N-PROPYLAMINO)BUTYRONITRILE