Xylulose
| Structural formula | ||||||||||
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| Fischer projection , open-chain representation | ||||||||||
| General | ||||||||||
| Surname | Xylulose | |||||||||
| other names |
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| Molecular formula | C 5 H 10 O 5 | |||||||||
| Brief description |
pale yellow syrupy liquid |
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| properties | ||||||||||
| Molar mass | 150.13 g mol −1 | |||||||||
| Physical state |
liquid |
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| safety instructions | ||||||||||
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| As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . | ||||||||||
Xylulose is a ketopentose, i.e. a monosaccharide with five carbon atoms (hence pentose ) and a keto group on the C 2 atom (hence ketose ).
The molecule occurs in the form of xylulose-5-phosphate as an intermediate in the pentose phosphate pathway and as a signaling molecule.
| D -Xylulose - spellings | ||
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| Wedge formula | Haworth notation | |
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 α- D -xylulofuranose |
 β- D -xylulofuranose |
Xylulose gives a positive Fehling test . It can be represented by reacting xylose with pyridine in the heat. Xylulose forms an osazone which melts at 160–163 ° C. The L -form can be detected in the urine in pentosuria . The biosynthesis probably proceeds from D- glucuronic acid .
Individual evidence
- ↑ a b c Xylulose data sheet from Sigma-Aldrich , accessed on April 15, 2011 ( PDF ).
- ↑ a b c d e entry on d-xylulose. In: Römpp Online . Georg Thieme Verlag, accessed on December 25, 2014.
Web links
Commons : Xylulose - Collection of pictures, videos and audio files
