Topic summary
Butan-2-ol
Extracted from the Wikipedia article 2-Butanol.
Butan-2-ol, or sec-butanol, is an organic compound with formulaCH3CH(OH)CH2CH3. Its structural isomers are 1-butanol, isobutanol, and tert-butanol. 2-Butanol is chiral and thus can be obtained as either of two stereoisomers designated as (R)-(−)-butan-2-ol and (S)-(+)-butan-2-ol. It is normally encountered as a 1:1 mixture of the two stereoisomers — a racemic mixture.