3,3,5-三甲基环己酮

2-chloro-3,5,5-trimethyl-2-cyclopentenone

2-ethyl-2,4,4,6,6-pentachloro-5,5-dimethyl-1,3-cyclohexanedione

2,2,6,6-tetrachloro-3,3,5-trimethylcyclohexanone

3,5,5-trichloro-2,4,4-trimethylcyclopent-2-en-1-one