The IUPAC name of ${\mathrm{CH}}_3-\stackrel{\stackrel{{\mathrm{CH}}_3}{|}}{\mathrm{CH}}-\stackrel{\stackrel{{\mathrm{CH}}_3}{|}}{\mathrm{CH}}-{\mathrm{CH}}_2-{\mathrm{CH}}_3$ is----

The organic compound is given as

$\underset{1}{{\mathrm{CH}}_3}-\underset{2}{\stackrel{\stackrel{{\mathrm{CH}}_3}{|}}{\mathrm{CH}}}-\stackrel{\stackrel{{\mathrm{CH}}_3}{|}}{\underset{3}{\mathrm{CH}}}-\underset{4}{{\mathrm{CH}}_2}-\underset{5}{{\mathrm{CH}}_3}$

Above compound contains two methyl groups at 2 and 3 positions.

The main chain has ‘5’ carbons. So, the root word is “pent” and use the prefix as “di” followed by the numerical 2, 3. 

The IUPAC name of the compound is 2,3 dimethyl pentane − .