Chapter 23, Problem 23.81QP

Interpretation Introduction

Interpretation:

The structural formula should be identified for the amino acid attached to the ${\text{C}}_{\text{4}}{\text{H}}_{\text{9}}$ alkyl group.

Concept introduction:

Isomer: Molecule has same molecular formula but different structural arrangement is called isomer.

Constitutional isomer: (or structural) isomers differ in the connectivity they contain different functional groups and / or bonding patterns is called constitutional isomer.