4'-BUTOXY-2-(BUTYLAMINO)-ACETANILIDE HYDROCHLORIDE

4'-ETHOXYCARBONYLPROPIONANILIDE

4-{1-[4-(BENZOYLOXY)PHENYL]-1-METHYLETHYL}PHENYL BENZOATE

4-(2-{4-[(3-NITROBENZOYL)OXY]PHENYL}DIAZENYL)PHENYL 3-NITROBENZOATE

4-(2-NITRO-PHENYL)-3-OXO-2-(TRIPHENYL-PHOSPHANYLIDENE)-BUTYRONITRILE

4-(3,4-XYLYL)-3-THIOSEMICARBAZIDE

4-(4-CHLOROBENZYLIDENEAMINO)SALICYLIC ACID

4-(AMINOMETHYL)-CYCLOHEXANECARBOXYLIC ACID

4-(DIISOPROPYLAMINO)-BUTYRONITRILE

4-(HEXADECYLAMINO)BENZYLAMINE TARTRATE (1 TO 2)

4-(HEXADECYLOXY)BENZENESULFONIC ACID (3-METHYL-2-BENZOTHIAZOLINYLIDENE)HYDRAZIDE

4-(HYDRAZINOSULFONYL)BENZOIC ACID

4-(N-DODECYL-3-METHYLANILINO)-1-BUTANESULFONIC ACID, SODIUM SALT

4-(NAPHTHALEN-2-YLOXY)-PHTHALONITRILE

4-(PARA-TOLYL)-BUTYRIC ACID