3-tert-Butyl-1H-pyrazole

4′-Bromo-6-chloroflavone

4-[2-(Methoxycarbonyl)anilino]-4-oxo-2-butenoic acid

4-(2-Iodoethynyl)benzonitrile

4-(3-Bromophenyl)-2-methoxy-5-(3-methyl-5-isoxazolyl)pyrimidine

4-(4-Bromophenyl)-1-(4-chlorophenyl)-1H-pyrazol-5-amine

4-(4-Chlorophenyl)-1H-pyrazol-3-amine

4-(4-Chlorophenyl)thiazole-2-carbaldehyde

4-(4′-Bromo-4-biphenyl)-2-(2-pyrazinyl)thiazole

4-(Benzyloxy)-2-hydroxybenzoic acid

4-(Methylthio)butanoic acid

4-Amino-6-methoxyquinoline

4-Amino-7-fluoro-1,3-benzothiazole-2-thiol

4-Benzoyl-1-methyl-1H-pyrrole-2-carbaldehyde

4-Bromo-1-methyl-1H-pyrrole-2-carbonitrile