6-氯-3,4-二氢-2,2-二甲基-2H-1-苯并吡喃-4-酮

6,6-dimethyloxane-2,4-dione

ethyl 5-hydroxy-5-methyl-3-oxohexanoate

methyl 5-hydroxy-5-methyl-3-oxohexanoate

4-(4-甲氧基苯基)-1-(1-甲基乙基)哌嗪