Which of the following represents the incorrect IUPAC name of the given compound?

Options

A. `CH_(3)CH_(2)-CO-CH_(3)` : Butanone
B. `CH_(3)CH_(2)-CHO` : Propanal
C. `CH_(3)CH_(2)-COOCH_(3)` : Ethanoic acid
D. `CH_(3)-CH_(2)-CH_(2)-CH_(2)-OH` : Butanol

Explanation

To determine which of the given options represents the incorrect IUPAC name of a compound, we will analyze each option step by step.

### Step-by-Step Solution:

1. **Identify the Structure of Each Option:**
- **Option A:** The structure is CH3-CH2-CO-CH3 (butan-2-one).
- **Option B:** The structure is CH3-CH2-CH(OH)-CH3 (butan-2-ol).
- **Option C:** The structure is CH3-COOH (ethanoic acid).
- **Option D:** The structure is CH3-CH2-CH2-CH2-OH (butanol).

2. **Analyze Option A:**
- The longest carbon chain has 4 carbons.
- The functional group is a ketone (C=O).
- The correct IUPAC name is butan-2-one.
- This option is correct.

3. **Analyze Option B:**
- The longest carbon chain has 4 carbons.
- The functional group is an alcohol (OH).
- The correct IUPAC name is butan-2-ol.
- This option is correct.

4. **Analyze Option C:**
- The compound is CH3-COOH.
- The longest chain has 2 carbons.
- The functional group is a carboxylic acid.
- The correct IUPAC name is ethanoic acid.
- However, the structure is not consistent with the name given as "Methyl Propanoate" which is an ester.
- This option is incorrect.

5. **Analyze Option D:**
- The longest carbon chain has 4 carbons.
- The functional group is an alcohol (OH).
- The correct IUPAC name is butan-1-ol.
- This option is correct.

### Conclusion:
The incorrect IUPAC name is found in **Option C**, as it misrepresents the compound's functional group and structure.