Answer : The structural formula for 2-methylpentanoic acid is shown below.
Explanation :
Structural formula or bond-line formula : In the structural formula, the bonding and type of bonds which holds the atoms in molecule together are shown.
In structural formula, the lines are used between the bonded atoms and the atoms are also shown.
The given compound is, 2-methylpentanoic acid.
In this compound, the parent chain is 5 membered, a substituent methyl is present at 2nd position of the parent chain and the carboxylic acid (-COOH) functional group is attached to it.