Question #cf662

1 Answer
Ernest Z.
Dec 15, 2015

Compound A is not an α-amino acid.

Explanation:

An α-amino acid has the #"NH"_2# group on the carbon adjacent to the #"COOH"# group (the α carbon).

Compound A is a β-amino acid (β-alanine).

Compound B is an α-amino acid (serine).

Compound C is an α-amino acid (aspartic acid).

Compound D is an α-amino acid (alanine).

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