Definitions
1.NounAny of four isomeric aliphatic alcohols, C4H9-OH
butan-1-ol or n-butanol or butyl alcohol - CH3(CH2)3-OH
butan-2-ol or sec-butanol - CH3CH2CH(CH3)-OH
2-methyl-propan-1-ol or iso-butanol - (CH3)2CHCH2-OH
1,1-dimethyl-ethanol or tert-butanol - (CH3)3C-OH
2.Nounbutan-1-ol or n-butanol or butyl alcohol - CH3(CH2)3-OH
3.Nounbutan-2-ol or sec-butanol - CH3CH2CH(CH3)-OH
4.Noun2-methyl-propan-1-ol or iso-butanol - (CH3)2CHCH2-OH
5.Noun1,1-dimethyl-ethanol or tert-butanol - (CH3)3C-OH