Butanediol
Butanediol, also called butylene glycol, may refer to any one of four stable structural isomers:
- 1,2-Butanediol
- 1,3-Butanediol
- 1,4-Butanediol
- 2,3-Butanediol
Geminal diols
There are also two geminal diols (gem-diols), which are less stable:
- 1,1-Butanediol,[1] hydrate of butanal
- 2,2-Butanediol,[2] hydrate of butanone
Isobutylene glycol and methylpropanediol
Isobutylene glycol may be considered a kind of butylene glycol, similarly to butane historically including n-butane and i-butane (isobutane). The modern name for the closely related type of compounds is methylpropanediol. There are two stable structural isomers:
- 2-methylpropane-1,2-diol
- 2-methylpropane-1,3-diol
and one unstable geminal diol:
- 2-methylpropane-1,1-diol (not a glycol), hydrate of 2-methylpropanal (isobutyraldehyde)
These three methylpropanediols are structural isomers of butanediols. They are not chiral.
Examples
2-Methylpropane-1,3-diol derivatives:
- Crisnatol, an experimental medication
- 2-Methyl-2-propyl-1,3-propanediol, medication precursor and active metabolite
See also
- C4H10O2
- Diol
- Alkanediol
- Hydroxyl-substituted butanes
- Butyl alcohol
- Butanetriol
- Butanetetrol (butanetetraol), including 4-carbon sugar alcohols
- Erythritol
- Threitol
References
Index of chemical compounds with the same name
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