三溴甲烷

二溴乙酸

bicyclo[3.2.1]oct-6-en-3-one

(3-oxo-8-oxabicyclo[3.2.1]oct-6-en-5-yl)methyl acetate

3-氧代-8-氮杂双环[3.2.1]-6-辛烯-8-羧酸 1,1-二甲基乙酯