1-Pentanone, 2-(1H-imidazol-1-yl)-1-(2,3,5,6-tetramethylphenyl)- 2-(1-Imidazolyl)-2',3',5',6'-tetramethylvalerophenone 73932-57-7 Valerophenone, 2-(1-imidazolyl)-2',3',5',6'-tetramethyl-