What is the IUPAC name for the compound with the structure CH3-CO-CH2-COOH?

What is the IUPAC name for the compound with the structure CH3-CO-CH2-COOH?

Step 1: Identify the functional groups in the compound. The structure CH3-CO-CH2-COOH has a ketone (CO) and a carboxylic acid (COOH).
Step 2: Count the total number of carbon atoms in the longest chain. There are 4 carbon atoms in total.
Step 3: Determine the position of the ketone group. The ketone is on the second carbon of the chain.
Step 4: Identify the name of the longest carbon chain. The longest chain with 4 carbons is called 'butanoic acid' because it has a carboxylic acid group.
Step 5: Combine the information about the ketone and the carboxylic acid. Since the ketone is on the second carbon, we name it '3-Oxo' (the ketone is on the third carbon when counting from the carboxylic acid).
Step 6: Put it all together. The full IUPAC name is '3-Oxobutanoic acid'.

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