Again, where is the OH attached? I assume it is to the 3rd C from the left.
That will make it a pentane.
So 3-hydroxy-pentane.
Name
OH
!
CH3 - CH2 - CH - CH2 - CH3
2 answers
Again clearer as
CH3-CH2-CH(OH)-CH2-CH3
CH3-CH2-CH(OH)-CH2-CH3