The IUPAC name of `underset(CH_(4)OH)underset(|)underset(CHOH)underset(|)(CH_(2)O)` is

Options

A. Propane-1,3-diol
B. Propane-1, 2.diol
C. Propane-1, 2-diol
D. Glycerol

Answer

To determine the IUPAC name of the compound with the formula `CH3OH`, `CHOH`, and `CH2O`, we will follow these steps:

### Step 1: Identify the Structure
The compound consists of three carbon atoms, each with hydroxyl (–OH) groups attached. The structure can be visualized as follows:

- The first carbon (C1) has a –CH3 group (methyl group) and an –OH group.
- The second carbon (C2) has an –OH group attached.
- The third carbon (C3) has a –CH2OH group (which is a methylene group with an –OH).

### Step 2: Determine the Longest Carbon Chain
The longest continuous chain of carbon atoms in this structure is three carbons long. Therefore, we will use "propane" as the base name.

### Step 3: Identify the Functional Groups
Since there are three hydroxyl (–OH) groups in the compound, it is classified as a triol. The presence of three –OH groups indicates that it is a triol.

### Step 4: Number the Carbon Chain
We need to number the carbon chain to give the hydroxyl groups the lowest possible numbers. The numbering will be as follows:
- C1: –CH3 and –OH
- C2: –OH
- C3: –CH2OH

Thus, the hydroxyl groups are on C1, C2, and C3.

### Step 5: Write the IUPAC Name
Combining the information from the previous steps, the IUPAC name of the compound is:
- Propane (for the three carbon atoms)
- 1,2,3-triol (indicating the presence of three hydroxyl groups)

Putting it all together, the IUPAC name is **Propane-1,2,3-triol**.

### Final Answer:
**The IUPAC name of the compound is Propane-1,2,3-triol.**

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