4-(4-BROMO-PHENYL)-2,6-DIPHENYL-PYRANYLIUM, PERCHLORATE

4-(4-QUINOLYLAZO)BENZENESULFONIC ACID

4-(6-HYDROXY-3,4-XYLYLAZO)BENZOIC ACID

4-(BENZYLIDENEAMINO)PHENOL

4-(BUTOXYCARBONYL)PHENYL N-(2,5-XYLYL)CARBAMATE

4-(DIMETHYLAMINO)-4'-ETHYL-2-METHYLAZOBENZENE

4-(DIMETHYLAMINO)AZOBENZENE N-OXIDE

4-(METHYLTHIO)PHENYL N-(4-METHYL-2-NITROPHENYL)CARBAMATE

4-(N-(4-CHLORO-2-METHYLPHENYL)CARBAMOYL)-2,6-DIMETHYLMORPHOLINE

4-ACETAMIDOPHENYL ACETATE

4-ACETAMIDOPHENYL N-ISOPROPYLCARBAMATE

4-BENZYL-PIPERAZINE-1-CARBOXYLIC ACID (4-CHLORO-PHENYL)-AMIDE

4-BENZYLIDENEAMINOANTIPYRINE

4-BIPHENYLSULFONIC ACID

4-BROMO-1,7-DIETHOXYHEPTANE