Consider the amino acid molecule shown below in a Fischer representation. Which of the following correctly designates this molecule as either a D- or L-amino acid? Hint: you may need to switch two groups one or two times to get the molecule to look like the familiar Fischer D- and L- representations of the "reference compound" glyceraldehyde. Recall that -COOH (or HOOC-, depending on the orientation) represents a carboxylic acid functional group. Isopropyl NH₂ -COOH O The molecule is neither a D- nor an L-amino acid O The molecule is a L-amino acid The molecule is a D-amino acid

Organic Chemistry
8th Edition
ISBN:9781305580350
Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote
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Chapter25: Carbohydrates
Section: Chapter Questions
Problem 25.48P
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Consider the amino acid molecule shown below in a Fischer representation. Which of the following
correctly designates this molecule as either a D- or L-amino acid? Hint: you may need to switch two
groups one or two times to get the molecule to look like the familiar Fischer D- and L-
representations of the "reference compound" glyceraldehyde. Recall that -COOH (or HOOC-,
depending on the orientation) represents a carboxylic acid functional group.
Isopropyl
H
NH₂
-COOH
The molecule is neither a D- nor an L-amino acid
O The molecule is a L-amino acid
O The molecule is a D-amino acid
Transcribed Image Text:Consider the amino acid molecule shown below in a Fischer representation. Which of the following correctly designates this molecule as either a D- or L-amino acid? Hint: you may need to switch two groups one or two times to get the molecule to look like the familiar Fischer D- and L- representations of the "reference compound" glyceraldehyde. Recall that -COOH (or HOOC-, depending on the orientation) represents a carboxylic acid functional group. Isopropyl H NH₂ -COOH The molecule is neither a D- nor an L-amino acid O The molecule is a L-amino acid O The molecule is a D-amino acid
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