| D-Ribulose | |
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(3R,4R)-1,3,4,5-Tetrahydroxypentan-2-one |
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Other names
D-erythro-2-Pentulose |
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| Identifiers | |
| CAS number | 488-84-6, (D) 2042027-5 (L) 5556-48-9 (DL) |
| PubChem | 151261 |
| Jmol-3D images | Image 1 |
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| Properties | |
| Molecular formula | C5H10O5 |
| Molar mass | 150.13 g mol−1 |
| (verify) (what is: /?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
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| Infobox references | |
Ribulose is a ketopentose — a monosaccharide containing five carbon atoms, and including a ketone functional group. It has chemical formula C5H10O5. Two enantiomers are possible, D-ribulose (D-erythro-pentulose) and L-ribulose (L-erythro-pentulose). D-Ribulose is the diastereomer of D-xylulose.
Ribulose sugars are composed in the pentose phosphate pathway. They are important in the formation of many bioactive substances. For example, D-ribulose is an intermediate in the fungal pathway for D-arabitol production. Also, as the 1,5-bisphosphate, D-ribulose combines with carbon dioxide at the start of the photosynthesis process in green plants (carbon dioxide trap).
A synthetic form of ribulose known as sucroribulose is found in many brands of artificial sweeteners.
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