Glucose

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D-Glucose

Glucose C6H12O6
Identifiers
Abbreviations Glc
CAS number 50-99-7 YesY
PubChem 5793
ChemSpider 5589 YesY
UNII 5SL0G7R0OK YesY
EC nummer 200-075-1
KEGG C00031 N
MeSH Glucose
ChEBI CHEBI:4167 YesY
ChEMBL CHEMBL1222250 YesY
RTECS nummer LZ6600000
ATC code B05CX01,V04CA02, V06DC01
Beilstein Reference 1281604
Gmelin Reference 83256
3DMet B04623
Jmol-3D images Image 1
Image 2
Properties
Molecular formula C6H12O6
Molar mass 180.16 g mol−1
Appearance White pouder
Density 1.54 g/cm3
Meltin pynt

α-D-glucose: 146 °C
β-D-glucose: 150 °C

Solubility in water 91 g/100 mL
Thermochemistry
Std enthalpy o
formation
ΔfHo298
−1271 kJ/mol [1]
Std enthalpy o
combustion
ΔcHo298
−2805 kJ/mol
Staundart molar
entropy
So298
209.2 J K−1 mol−1
Speceefic heat capacity, C [2]
Hazards
MSDS ICSC 0865
EU Index nae leetit
NFPA 704
NFPA 704.svg
1
0
0
 YesY (verify) (what is: YesY/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Glucose (/ˈɡlks/ or /-kz/; C6H12O6, an aa kent as D-glucose, dextrose, or grape sugar) is a simple monosaccharide foond in plants. It is ane o the three dietary monosaccharides, alang wi fructose an galactose, that are absorbed directly intae the bluidstream durin digestion. An important carbohydrate in biology, cells uise it as the primary soorce o energy[3] an a metabolic intermediate. Glucose is ane o the main products o photosynthesis an fuels for cellular respiration. Glucose exists in several different molecular structures, but aw o these structurs can be dividit intae twa faimilies o mirror-images (stereoisomers). Anly ane set o these isomers exists in naitur, those derived frae the "richt-haundit furm" o glucose, denotit D-glucose. D-glucose is sometimes referred tae as dextrose, altho the uise o this name is strangly discouraged. The term dextrose is derived frae dextrorotatory glucose.[4] This name is tharefore confusin when applied tae the enantiomer, which rotates licht in the opposite direction. Starch an cellulose are polymers derived frae the dehydration o D-glucose. The ither stereoisomer, cried L-glucose, is hairdly ever foond in naitur.

The name "glucose" comes frae the Greek wird glukus (γλυκύς), meanin "sweet". The suffix "-ose" denotes a succar.

References[eedit | eedit soorce]

  1. Ponomarev, V. V.; Migarskaya, L. B. (1960), "Heats of combustion of some amino-acids", Russ. J. Phys. Chem. (Engl. Transl.) 34: 1182–83 .
  2. Boerio-Goates, Juliana (1991), "Heat-capacity measurements and thermodynamic functions of crystalline α-D-glucose at temperatures from 10K to 340K", J. Chem. Thermodynam. 23 (5): 403–9, doi:10.1016/S0021-9614(05)80128-4 .
  3. Clark, D.; Sokoloff, L. (1999), Basic Neurochemistry: Molecular, Cellular and Medical Aspects, Lippincott, pp. 637–670 
  4. "dextrose", Merriam-Webster Online Dictionary, retrieved 2009-09-02 .

Freemit airtins[eedit | eedit soorce]