S2methyl1butanol

S2methyl1butanol, also known as 2-methyl-1-butanol or active amyl alcohol, is a branched-chain primary alcohol with the chemical formula C5H12O. It is one of several isomers of pentanol. This organic compound is a chiral molecule, meaning it exists as two enantiomers, (R)-(-)-2-methyl-1-butanol and (S)-(+)-2-methyl-1-butanol, which are non-superimposable mirror images of each other. The naturally occurring enantiomer is typically the (S) form.

S2methyl1butanol is a colorless liquid with a characteristic odor often described as fruity or fusel-like. It is moderately soluble in water and miscible with many organic solvents. Its properties make it useful in various applications. It is a component of fusel oil, a by-product of alcoholic fermentation, and can be isolated from this source.

Industrially, S2methyl1butanol finds use as a solvent for resins, oils, and waxes. It is also employed as an intermediate in the synthesis of other organic chemicals, including esters that can be used as flavorings and fragrances. Due to its chirality, it can be used in asymmetric synthesis for producing enantiomerically pure compounds. Its presence in some fermented beverages contributes to their aroma profile.