1H-PYRROLE-2-CARBOHYDRAZIDE

1-HYDROXY-2,2,4,5,5-PENTAMETHYL-3-IMIDAZOLINE

1-HYDROXY-2,2,4,5,5-PENTAMETHYL-3-IMIDAZOLINE-3-OXIDE

1-HYDROXY-2,2,4,5,5-PENTAMETHYL-3-IMIDAZOLINE-3-OXIDE

1-Hydroxy-2-naphthoic acid

1-HYDROXY-2-PHENYL-1,5,6,7-TETRAHYDRO-4H-BENZIMIDAZOL-4-ONE

1-HYDROXY-3-METHYL-5-PHENYL-1H-PYRAZOL-2-IUM-2-OLATE