The compound, ${\left({\text{CH}}_{\text{3}}\right)}_{\text{2}}\text{C}\left(\text{OH}\right){\text{CH}}_{\text{2}}{\text{CH}}_{\text{3}}$ may be called as

${\left({\text{CH}}_{\text{3}}\right)}_{\text{2}}\text{C}\left(\text{OH}\right){\text{CH}}_{\text{2}}{\text{CH}}_{\text{3}}$ also called as 2 – Methylbutan – 2 – ol or Tert – Pentyl alcohol.

In 3-Pentanol, -OH group present on the the third carbon of the longest carbon chain.

Isoamyl alcohol is ${\left({\mathrm{CH}}_3\right)}_2-\mathrm{CH}-{\mathrm{CH}}_2-{\mathrm{CH}}_2-\mathrm{OH}.$