Trehalose
| Names | |
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| IUPAC name
α-D-Glucopyranosyl α-D-glucopyranoside
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| Systematic IUPAC name
(2R,3S,4S,5R,6R)-2-(Hydroxymethyl)-6-[(2R,3R,4S,5S,6R)-3,4,
5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxane-3,4,5-triol | |
| Other names
α,α‐Trehalose, mycose, tremalose
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| Identifiers | |
3D model (JSmol)
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| ChEBI | |
| ChEMBL | |
| ChemSpider | |
| ECHA InfoCard | 100.002.490 |
PubChem CID
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| UNII | |
CompTox Dashboard (EPA)
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| Properties | |
| C12H22O11 (anhydride) | |
| Molar mass | 342.296 g/mol (anhydrous) 378.33 g/mol (dihydrate) |
| Appearance | White orthorhombic crystals |
| Density | 1.58 g/cm3 at 24 °C |
| Melting point | 203 °C (397 °F; 476 K) (anhydrous) 97 °C (dihydrate) |
| 68.9 g per 100 g at 20 °C | |
| Solubility | Slightly soluble in ethanol, insoluble in diethyl ether and benzene |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
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Trehalose is a sugar derived from two molecules of glucose. Trehalose is a disaccharide formed by a 1,1-glycosidic bond between two α-glucose units. It is found in nature as a disaccharide and also as a monomer in some polymers. Two other stereoisomers exist: α,β-trehalose, also called neotrehalose, and β,β-trehalose, also called isotrehalose. Neither of these alternate isomers has been isolated from living organisms, but isotrehalose has been found in starch hydroisolates. Some bacteria, fungi, plants and invertebrate animals synthesize it as a source of energy, and to survive freezing and lack of water.