IUPAC name of m-cresol is.......... .

Options

A. 3-methylphenol
B. 3-chlorophexan-5-ol
C. 3-methoxyphenol
D. benzene-1,3-idol.

Explanation

To determine the IUPAC name of m-cresol, we can follow these steps:

### Step 1: Identify the Structure
m-Cresol is a derivative of phenol where a methyl group (–CH₃) is attached to the benzene ring at the meta position relative to the hydroxyl group (–OH).

### Step 2: Number the Carbon Atoms
In the benzene ring, we will number the carbon atoms starting from the carbon that is part of the hydroxyl group (–OH). The numbering will be as follows:
- The carbon with the –OH group is carbon 1.
- The carbon with the methyl group (–CH₃) will be carbon 3.

### Step 3: Identify the Functional Group
The functional group present in m-cresol is the hydroxyl group (–OH), which is a phenolic group. This group has priority in naming.

### Step 4: Write the IUPAC Name
Since the methyl group is located at the third carbon of the benzene ring, and the parent compound is phenol, the IUPAC name will be:
- 3-methylphenol

### Step 5: Confirm the Correct Option
Among the given options, we can confirm that the correct IUPAC name for m-cresol is indeed 3-methylphenol.

### Final Answer
The IUPAC name of m-cresol is **3-methylphenol**.

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