~95%, syrup

threo-2-Pentulose, L-threo-Pentulose
Empirical Formula (Hill Notation):
CAS Number:
Molecular Weight:
MDL number:
PubChem Substance ID:
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light yellow

storage temp.


SMILES string




InChI key


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Biochem/physiol Actions

L-Xylulose, ketopentose monosaccharide, is a nonpshosphorylated intermediate in the glucoronic acid pathway. L-Xylulose accumulates in the urine patients with pentosuria and cirrhosis.
L-xylulose is a monosaccharide which contains five carbon atoms, and includes a ketone functional group.

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

WGK Germany


Flash Point(F)

235.4 °F

Flash Point(C)

113 °C

Certificate of Analysis
Certificate of Origin
Touster, O.
Methods Carbohydr. Chem., 1, 98-98 (1962)
Fuzhi Lu et al.
Applied microbiology and biotechnology, 103(16), 6473-6481 (2019-07-04)
Polyol dehydrogenases (PDHs) play a pivotal role in the biotransformation between rare sugar and alcohol. Among these PDHs, mannitol 2-dehydrogenase (MDH, EC, galactitol 2-dehydrogenase (GDH, EC, ribitol 2-dehydrogenase (RDH, EC, xylitol 4-dehydrogenase (XDH, EC, and arabitol...
Yu Yang et al.
ChemSusChem, 5(2), 405-410 (2012-02-09)
Furfural was prepared in high yields (75 %) from the reaction of xylose in a water-tetrahydrofuran biphasic medium containing AlCl(3)·6H2O and NaCl under microwave heating at 140 °C. The reaction profile revealed the formation of xylulose as an intermediate en...
Dawei Yuan et al.
Bioresource technology, 117, 92-98 (2012-05-23)
A system that incorporates a packed bed reactor for isomerization of xylose and a hollow fiber membrane fermentor (HFMF) for sugar fermentation by yeast was developed for facile recovery of the xylose isomerase enzyme pellets and reuse of the cartridge...
Le Tho Son et al.
FEBS letters, 585(9), 1310-1316 (2011-04-12)
Dicarbonyl/L-xylulose reductase (DCXR) converts l-xylulose into xylitol, and reduces various α-dicarbonyl compounds, thus performing a dual role in carbohydrate metabolism and detoxification. In this study, we identified DHS-21 as the only DCXR ortholog in Caenorhabditis elegans. The dhs-21 gene is...

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