Butanol or butyl alcohol (sometimes also called biobutanol when produced biologically), is a primary alcohol with a 4 carbon structure and the molecular formula of C4H9OH. It belongs to the higher alcohols and branched-chain alcohols.
It is primarily used as a solvent, as an intermediate in chemical synthesis, and as a fuel.
There are four isomeric structures for butanol.
Read more about Butanol: Isomers, Toxicity, Production