methyl 2,4-dioxo-5-(trifluoromethyl)-1H-pyrimidine-6-carboxylate

1,5-二氧杂螺[5.5]十一碳-3-烯-2-酮

4-Oxo-5-trifluoromethyl-4H-1,3-dioxine-2-spirocyclohexane

3-(perfluoroethyl)-1,5-dioxaspiro[5.5]undec-3-en-2-one

5-三氟甲基-1H-吡咯-2-羧酸甲酯