Butanediol, also called butylene glycol, may refer to any one of four stable

structural isomer In chemistry, a structural isomer (or constitutional isomer in the IUPAC nomenclature) of a compound is a compound that contains the same number and type of atoms, but with a different connectivity (i.e. arrangement of bonds) between them. The ...

s: * 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, hydrate of butanal *2,2-Butanediol, 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 Chirality () is a property of asymmetry important in several branches of science. The word ''chirality'' is derived from the Greek language, Greek (''kheir''), "hand", a familiar chiral object. An object or a system is ''chiral'' if it is dist ...

Examples

2-Methylpropane-1,3-diol derivatives: * Crisnatol, an experimental medication * 2-Methyl-2-propyl-1,3-propanediol, medication precursor and active metabolite

References

{{Chemistry index Alkanediols

Geminal diols

Isobutylene glycol and methylpropanediol

Examples

See also

References