Chemistry - Nomenclature Question with Solution | TestHub

The six-carbon chain has double bonds at 2 and 4 whichever end we start from; $\mathrm{C}{\mathrm{H}}_3$ is on ${\mathrm{C}}_3$ from the first end and ${\mathrm{C}}_4$ from the other, so we number from the first end.

Name: 3-methylhexa-2,4-diene.