Chemistry - Nomenclature Question with Solution | TestHub

The aldehyde has the highest priority, so ${\mathrm{C}}_1$ is the $\mathrm{CHO}$ carbon and the suffix is -al. $\mathrm{OH}$ is on ${\mathrm{C}}_3$, the ketone (oxo) on ${\mathrm{C}}_4$ and the double bond at ${\mathrm{C}}_5$.

Alphabetical order: hydroxy, oxo.

Name: 3-hydroxy-4-oxohex-5-enal.