1H-Imidazole-4-carbaldehyde

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

1-HYDROXY-4-[(HYDROXYIMINO)METHYL]-2,2,5,5-TETRAMETHYL-2,5-DIHYDRO-1H-IMIDAZOL-3-IUM-3-OLATE

1-HYDROXY-4-NITROANTHRAQUINONE

1-Hydroxy-4-phenyl-2,2,5,5-tetramethyl-3-imidazoline