醋酸叔丁酯

(E)-4-methylsulfanyl-3-penten-2-one

3-Methyl-5-oxo-hexen-(2)-saeure-(1)-methylester

6-(2,2-dichloroethenyl)-4-methylpyran-2-one

2,3-bis(4-methylphenyl)-2-cyclopropen-1-one