What is the structure of `4`-Methylhex-`5`-en-`3`-ol.

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Answer

To determine the structure of 4-Methylhex-5-en-3-ol, we will follow these steps:

### Step 1: Identify the main chain
The name "hex" indicates that the main carbon chain consists of 6 carbon atoms. Therefore, we will start by drawing a straight chain of 6 carbon atoms.

### Step 2: Number the carbon chain
We will number the carbon chain starting from one end. The numbering should be done in such a way that the substituents receive the lowest possible numbers.

### Step 3: Identify the substituents
- The "4-methyl" indicates that there is a methyl group (-CH₃) on the 4th carbon of the main chain.
- The "5-en" indicates that there is a double bond between the 5th and 6th carbon atoms.
- The "3-ol" indicates that there is a hydroxyl group (-OH) on the 3rd carbon of the main chain.

### Step 4: Assemble the structure
1. Start with the 6 carbon chain: C1 - C2 - C3 - C4 - C5 - C6.
2. Place the hydroxyl group (-OH) on the 3rd carbon (C3).
3. Place the methyl group (-CH₃) on the 4th carbon (C4).
4. Add a double bond between the 5th carbon (C5) and the 6th carbon (C6).

### Step 5: Draw the final structure
The final structure will look like this:

```
CH3
|
H3C - C - C - C = C - C
| |
OH H
```

### Final Structure:
- C1: CH₃ (1st carbon)
- C2: CH₂ (2nd carbon)
- C3: CH (with -OH)
- C4: CH (with -CH₃)
- C5: C (part of the double bond)
- C6: C (part of the double bond)