IUPAC name of the compound is
`{:(CH_(3)-CH-CH_(2)-CH(OH)-CH_(3)),(" |"),(" "CH_(2)),(" |"),(" "CH_(3)):}` is

Options

A. 4-ethyl-2-pentanol
B. 4-methyl-2-hexanol
C. 2-ethyl-2-pentanol
D. 3-methyl-2-hexanol

Answer

To determine the IUPAC name of the given compound, we will follow these steps:

### Step 1: Identify the Structure
The compound is represented as:
```
CH3
|
CH3-CH-CH2-CH(OH)-CH3
```
This structure indicates a hydrocarbon chain with an -OH (hydroxyl) functional group.

### Step 2: Determine the Longest Carbon Chain
We need to find the longest continuous carbon chain that includes the carbon atom bonded to the -OH group. In this case, the longest chain consists of 6 carbon atoms.

### Step 3: Number the Carbon Chain
We will number the carbon chain from the end closest to the -OH group to give it the lowest possible number:
```
1. CH3 - 1
2. CH2 - 2
3. CH - 3
4. CH2 - 4
5. CH - 5
6. CH3 - 6
```
The -OH group is on carbon 2.

### Step 4: Identify Substituents
In this structure, there is a methyl group (CH3) attached to carbon 4.

### Step 5: Write the IUPAC Name
The IUPAC name is constructed by combining the names of the substituents and the main chain:
- The longest chain is hexane (6 carbons).
- The hydroxyl group (-OH) is at position 2, so we use "hexan-2-ol".
- There is a methyl group at position 4, so we include "4-methyl".

Thus, the IUPAC name can be written as:
**4-methylhexan-2-ol**

### Alternative Naming
Alternatively, we can also write it as:
**2-hexanol, 4-methyl**

Both names are acceptable.

### Final Answer
The IUPAC name of the compound is **4-methylhexan-2-ol**.

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