3,3-dichloro-4,6,6-trimethyl-1,2-cyclohexanedione

2,3-Dimethoxy-4,6,6-trimethyl-cyclohex-2-enone

6,6-dichloro-2,2-dimethoxy-3,3,5-trimethylcyclohexan-1-one

3,3-dichloro-2,2-dimethoxy-4,6,6-trimethylcyclohexanone