Ribulose
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| Ribulose | |
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| IUPAC name | (3R,4R)-1,3,4,5-Tetrahydroxypentan-2-one |
| Other names | D-erythro-2-Pentulose Adonose Arabinulose Araboketose Ribosone |
| Identifiers | |
| CAS number | [488-84-6] |
| PubChem | |
| SMILES | C([C@H]([C@H](C(=O)CO)O)O)O |
| Properties | |
| Molecular formula | C5H10O5 |
| Molar mass | 150.13 |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references |
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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 photosynthetic 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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