4-FORMYL-1H-PYRROLE-2-CARBOTHIOIC ACID O-ETHYL ESTER

4-CHLOROBENZALDEHYDE [7-(2,3-DIHYDROXYPROPYL)-3-METHYL-2,6-DIOXO-2,3,6,7-TETRAHYDRO-1H-PURIN-8-YL]HYDRAZONE

4-HO-2-OXO-1,2-DIHYDRO-QUINOLINE-3-CARBOXYLIC ACID N'-CHLOROACETYL-HYDRAZIDE

4-HO-NAPHTHALENE-2-CARBOXYLIC ACID 2((3-HO-NAPHTHALENE-2-CARBONYL)AMINO)ET ESTER

4-HYDROXY-1-ISOBUTYL-N-(2-METHYLPHENYL)-2-OXO-1,2-DIHYDRO-3-QUINOLINECARBOXAMIDE

4-HYDROXY-1-OCTYL-2-OXO-N-(4-PYRIDINYL)-1,2-DIHYDRO-3-QUINOLINECARBOXAMIDE

4-HYDROXY-2-IMINO-4-THIAZOLINE-5-ACETIC ACID

4-HYDROXY-2-OXO-1,2-DIHYDRO-QUINOLINE-3-CARBOXYLIC ACID (2-CYANO-PHENYL)-AMIDE

4-Hydroxy-3,5-dipropylbenzamide

4-HYDROXY-5,5A-DIHYDROPYRROLO(1',2':2,3)PYRIDAZINO(6,1-A)ISOINDOL-10(4H)-ONE

4-Hydroxy-6,7-dimethoxyquinolin-2(1H)-one

4-HYDROXY-BENZOIC ACID ANTHRACEN-9-YLMETHYLENE-HYDRAZIDE

4-hydroxy-N-phenyl-2-quinolinecarboxamide

4-HYDROXYBENZOIC (4-METHOXYBENZYLIDENE)HYDRAZIDE

4-ISOPROPYL-3-CYCLOHEXEN-1-ONE