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What are the Isomers of Pentanol?

There are different isomers of the alcohols
propanol, butanol and pentanol.
The eight isomers of pentanol are shown below.

Pentanol (C₅H₁₁OH) is commonly represented
by the molecule pentan-1-ol,
a primary alcohol, which has the structural formula

Other isomers of pentanol can be drawn by changing
the way that the O–H group is joined to the molecule
or by changing the way that the carbon atoms
are joined to each other (see the isomers of pentane).

The other isomers of pentanol are pentan-2-ol,
a secondary alcohol,
represented by the structural formula

pentan-3-ol, a secondary alcohol,
represented below by the structural formula

2-methylbutan-1-ol, a primary alcohol,
represented below by the structural formula

3-methylbutan-1-ol, a primary alcohol,
represented below by the structural formula

2-methylbutan-2-ol, a tertiary alcohol,
represented below by the structural formula

2-methylbutan-3-ol (or 3-methylbutan-2-ol)
a secondary alcohol,
represented below by the structural formula

2,2-dimethylpropanol, a primary alcohol,
represented below by the structural formula

The single lines between the atoms
represent single covalent bonds.

Note that each carbon atom has four bonds (valency 4),
each oxygen atom has two bonds (valency 2)
and each hydrogen atom has one bond (valency 1).
Valency is the combining power of an atom.

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