顺-1,4-二氯-2-丁烯

4-[(4-methoxyphenyl)methoxy]but-2-en-1-ol

1-methoxy-4-[(4-methoxyphenyl)methoxymethyl]benzene

ethyl 4-hydroxybut-2-enyl carbonate

4,7-dihydro-1,3,2-dioxathiepine 2-oxide