5,5-dimethyl-1-phenylpyrazolidin-3-one

5,5-dimethyl-1,2-oxazolidin-3-one

2,7-dimethylocta-2,6-dien-4-one

2,6-dimethyl-2,6-octadien-4-one

2-methyl-6-(4-methylphenyl)hept-2-en-4-one