Which of the following is the Fischer project | vedclass

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(A) The structure of $L$-threonine is $(2S, 3R)-2$-amino-$3$-hydroxybutanoic acid.In a Fischer projection,the carbon chain is vertical with the most o

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(A) The structure of $L$-threonine is $(2S, 3R)-2$-amino-$3$-hydroxybutanoic acid.In a Fischer projection,the carbon chain is vertical with the most oxidized carbon $(COOH)$ at the top.For $L$-amino acids,the $-NH_2$ group is on the left side at the $\alpha$-carbon $(C-2)$.For the $(2S, 3R)$ configuration,the $-OH$ group at $C-3$ must be on the right side.Thus,the correct Fischer projection has $-NH_2$ on the left at $C-2$ and $-OH$ on the right at $C-3$.

Which of the following is the Fischer projection of $L$-threonine (also known as $(2S, 3R)-2$-amino-$3$-hydroxybutanoic acid)?

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