8-hydroxynon-1-en-5-one

ethylene ketal of O,O-diethyl-4-oxo-pentanephosphonate

diethyl (1-(2-methyl-1,3-dioxolan-2-yl)hept-6-en-3-yl)phosphonate

5-硝基-1-戊烯

5-methyltetrahydrofuran-2-ol