6-(prop-2-yn-1-yl)tetrahydro-2H-pyran-2-ol

2-(2-pentynyl)-3,4-dihydro-2H-pyran

(Z)-1-bromopent-2-ene

5-oxo-(Z)-7-decenoic acid

3-((Z)-2-pentenyl)-2-hydroxy-2-cyclohexen-1-one