4,4,5,5,6,6,7,7,8,8,9,9,9-tridecafluoronon-1-ene

4-methyl-4-nitropent-1-ene

4-戊烯酸甲酯

1-phenylpent-4-en-2-one

1-(4-methoxyphenyl)but-3-en-1-one