2,2-二甲基环丙烷羧酸乙酯

5,5-二甲基-二氢-呋喃-2-酮

ethyl 4-chloro-4-methylpentanoate

4-bromo-3,3-dimethyl-butyric acid ethyl ester

(+-)-2-Brom-3.3-dimethyl-cyclobutanon