2,6-DIMETHOXY-4-METHYLPHENOL

4-HYDROXY-3-NITROPHENYLACETIC ACID

6-(TRIFLUOROMETHOXY)-4-QUINOLINOL

4-HYDROXY-6-(TRIFLUOROMETHOXY)QUINOLINE-3-CARBOXYLIC ACID

4-HYDROXY-6-METHOXYMETHYL-2-(METHYLTHIO)PYRIMIDINE

4-HYDROXY-6-METHOXYMETHYL-2-(METHYLTHIO)PYRIMIDINE

4-HYDROXY-6-METHYL-3-NITRO-2-PYRIDONE

4-hydroxy-6-methylamino-2-naphthalene sulfonic acid

4-HYDROXY-7-METHOXYCOUMARIN

4-HYDROXY-7-METHYL-3-PHENYL-1,2-DIHYDROQUINOLIN-2-ONE

4-Hydroxy-7-methylamino-2-naphthalenesulfonic acid