6-but-3-enyl-3-ethoxycyclohex-2-en-1-one

1,3-di(but-3-en-1-yl)-5-methylpyrimidine-2,4(1H,3H)-dione

1-(Buten-(3)-yl)-thymin

1-(3-丁烯基)吡咯烷

(3-but-3-enyl-3-methyl-2-phenylcyclopropen-1-yl)benzene