3,4-dimethyl-2-phenylcyclopent-2-enone
ozone
hydrogenchloride
chloroform
2,3,4-trimethylcyclopent-2-en-1-one
5,6-dimethyl-2H-pyridazin-3-one
1-(O-benzyloxyamino)-4-(1,3-dithian-2-ylidene)-3-methyl-1-pentanone
3-(3-oxo-cyclo-1-hexenyl)buttersaeuremethylester
3-(4'-Methyl-3'oxo-1'-cyclohexenyl)-butansaeuremethylester
3-(4-Methyl-3-oxo-cyclohex-1-enyl)-butyric acid