Determine the configuration of the given comp | vedclass

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(D) $1$. Assign priority to the groups attached to the chiral center using Cahn-Ingold-Prelog $(CIP)$ rules: $-NH_2$ $(1)$,$-COOH$ $(2)$,$-CH_3$ $(3)$

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both $(B)$ and $(C)$

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(D) $1$. Assign priority to the groups attached to the chiral center using Cahn-Ingold-Prelog $(CIP)$ rules: $-NH_2$ $(1)$,$-COOH$ $(2)$,$-CH_3$ $(3)$,$-H$ $(4)$.$2$. In the given structure,the lowest priority group $(-H)$ is on a wedge (pointing towards the viewer).$3$. Looking at the arrangement of the remaining groups ($1$,$2$,$3$),the sequence $1$ $\rightarrow 2$ $\rightarrow 3$ appears clockwise,which corresponds to $R$ configuration. Since the lowest priority group is on a wedge,we reverse the result,making the configuration $S$.$4$. For $D/L$ nomenclature,we look at the Fischer projection or the orientation of the amino group in amino acids. In the given structure,the $-NH_2$ group is on the left side when the carbon chain is vertical with the most oxidized group at the top,which corresponds to the $L$ configuration.$5$. Therefore,the compound has both $L$ and $S$ configurations.

Amino acid	$pH$ at Isoelectric point
$(Amino \ acid)_{I}$	$6$
$(Amino \ acid)_{II}$	$9.8$
$(Amino \ acid)_{III}$	$3.9$

Determine the configuration of the given compound.

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