1-甲酰基乙基乙酸酯

methyl 2-methyl-5-((phenylselanyl)methyl)-4,5-dihydrofuran-3-carboxylate

(E)-2,3-diacetylacrylate

2-乙酰基戊-4-烯酸甲酯

methyl 1,4-dimethyl-2,3,7-trioxabicyclo[2.2.1]hept-5-ene-5-carboxylate