United States Pharmacopeia (USP)
Reference Standard
Synonym: Dulcite, Dulcitol, Galactitol
·
Empirical Formula
(Hill Notation) C6H14O6
·
Molecular
Weight 182.17
·
Beilstein
Registry Number 1721903
Properties
Related Categories
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InChI Key
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FBPFZTCFMRRESA-GUCUJZIJSA-N
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Galactitol (dulcitol) is a sugar alcohol, the reduction product of galactose. In people
with galactokinase
deficiency, a form
of galactosemia, excess dulcitol forms in the lens of the
eye leading to cataracts.
Detailed description
Galactitol is produced from galactose in a reaction catalyzed
by aldose reductase.
Galactose itself comes from the metabolism of the disaccharide lactose into glucose and galactose.
The other common galactose metabolism defect is a
defect in galactose-1-phosphate
uridylyltransferase, an autosomal
recessive disorder, which also causes a buildup of galactitol as a
result of increased concentrations of galactose-1-phosphate and galactose. The
toxicity associated with galactose-1-phosphate
uridylyltransferase deficiency is associated with symptoms
of hepatosplenomegaly and mental retardation in
addition to the cataracts caused by galactitol buildup.
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