What is the correct IUPAC name for the compound with the structure $\left(C_2{H}_5\right)2CHCH2CH2OH$?

• A. 3-ethyl-1-pentanol
• B. 1-hexanol
• C. 4-ethyl-1-pentanol
• D. 3-ethyl-1-hexanol

Answer: (D)

Verified step by step guidance

1. Identify the longest continuous carbon chain that contains the hydroxyl (-OH) group. This chain determines the parent name of the alcohol.
2. Number the carbon chain starting from the end nearest to the hydroxyl group to give the -OH the lowest possible number. This number will be the position of the alcohol group.
3. Identify and name any alkyl substituents attached to the main carbon chain. Determine their positions based on the numbering of the main chain.
4. Combine the substituent names and positions with the parent alcohol name, placing substituents in alphabetical order and using hyphens to separate numbers and words.
5. Write the full IUPAC name by indicating the position of the substituents and the hydroxyl group, for example, as in '3-ethyl-1-hexanol', where 'hexanol' is the parent chain with six carbons and an -OH at carbon 1, and 'ethyl' is a substituent at carbon 3.