The correct systematic name of the above compound is :

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3-methoxy formyl ethanoic acid

2-methoxy formyl acetic acid

2-acetoxy ethanoic acid

3-methoxy carbonyl propanoic acid

answer is B.

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Detailed Solution

The correct systematic (IUPAC) name of the compound shown in the image:

Structural formula: CH₃–O–C(=O)–CH₂–COOH

This is a compound where a methyl group is attached via oxygen to a carbonyl (making it a methyl ester), and a carboxylic acid group is present on the second carbon.

Breaking Down the Structure

Parent chain: 2 carbons, so the parent acid is propanoic acid.
Methyl ester function is present at the first carbon.
Correct systematic name is: Methyl 2-carboxyacetate or, by standard IUPAC naming, Methyl 2-carboxyacetate.
More strictly, since the main chain has two carboxylic acid groups (one as ester, one free), the preferred IUPAC name is Methyl 2-carboxyacetate, but the most accepted and commonly used IUPAC name is:

Methyl 2-carboxyacetate or Methyl malonate (malonic acid monomethyl ester).

Final IUPAC Name:

Methyl 2-carboxyacetate

Methyl malonate (monomethyl malonate).

For competitive exams and standard nomenclature:

Methyl 2-carboxyacetate is the best answer.