4'-CHLORO-2,4-DINITRODIPHENYL ETHER

4'-CHLORO-3-HYDROXY-2'-METHYL-2-NAPHTHALILIDE MONOPHOSPHATE ESTER

4'-METHYL-2'-NITROMALEANILIC ACID

4'-METHYL-3-(2-THIENYL)ACRYLOPHENONE

4-{1-[4-(2-FUROYLOXY)PHENYL]CYCLOPENTYL}PHENYL 2-FUROATE

4-((5-BROMO-1,3-DIOXO-1,3-DIHYDRO-ISOINDOL-2-YLMETHYL)-AMINO)-BENZOIC ACID

4-(2-(4-MEO-PHENYLAMINO)-3,5-DINITRO-BENZOYL)-3,4-DIHYDRO-1H-QUINOXALIN-2-ONE

4-(2-HYDROXY-1-NAPHTHYLMETHYLENEAMINO)ANTIPYRINE

4-(2-PHTHALIMIDOPHENYL)BUTYRIC ACID

4-(2,4-DIAMINO-5-(3-CHLORO-2-HO-5-NITRO-PHENYLAZO)-PHENOXY)-BENZOIC ACID, NA

4-(2,4-DIMETHOXY-PH)-6-ME-2-OXO-1,2,3,4-4H-PYRIMIDINE-5-CARBOXYLIC ACID ET ESTER

4-(2,4-DIPENTYL-PHENOXY)-BUTYRAMIDE

4-(2,5-DIMETHOXYBENZYLIDENE)-2-PHENYL-2-OXAZOLIN-5-ONE

4-(3-ACO-12-HO-DIMETHYL-CYCLOPENTA(A)PHENANTHREN-17-YL)-PENTANOIC ACID ME ESTER

4-(3-BROMOPHENYLAZO)-N,N-DIETHYLANILINE