IUPAC name of glycine is

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2-amino butanoic acid

2-amino propanoic acid

2-amino pent-1, 5-dioic acid

Amino ethanoic acid

answer is C.

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Detailed Solution

Explanation

Glycine is the simplest amino acid and has the molecular formula C₂H₅NO₂C₂H₅NO₂. In IUPAC nomenclature, the structure of glycine includes an amino group (−NH₂−NH₂) attached to the second carbon of a two-carbon chain (ethanoic acid). Thus, it is named 2-aminoethanoic acid.

Options Analysis

a. 2-amino propanoic acid: This refers to an amino acid with three carbons, which is incorrect for glycine.
b. 2-amino butanoic acid: This refers to an amino acid with four carbons, also incorrect.
c. Amino ethanoic acid: This is another way to refer to glycine and is correct.
d. 2-amino pent-1,5-dioic acid: This refers to a different compound with five carbons and is not related to glycine.

Thus, the correct answer from the provided options is c. Amino ethanoic acid, which aligns with the IUPAC naming conventions for glycine

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