Question

Select the correct IUPAC name for the compound shown.

• A. 5-methyl-5-ethyloctane
• B. 5-methyl-5-propylheptane
• C. 3-ethyl-4-methyloctane
• D. 3-methyl-3-propylheptane

Answer 1

The correct option is C 3-ethyl-4-methyloctane

Choose the longest, most substituted carbon chain. The longest carbon chain consists of eight carbons.

Carbons bonded to a functional group must have the lowest possible carbon number. Hence, ethane is substituted on third carbon and methane on fourth carbon.

Hence, the name 3-ethyl-4-methyloctane.