Skeletal formula of d-glucose

Haworth projection of α-d-glucopyranose

Fischer projection of d-glucose
Pronunciation /ˈɡlkz/, /ɡlks/
IUPAC name
Allowed trivial names:[1]
  • ᴅ-Glucose
  • ᴅ-gluco-Hexose
Preferred IUPAC name
PINs are not identified for natural products.
Systematic IUPAC name
  • (2R,3S,4R,5R)-2,3,4,5,6-Pentahydroxyhexanal (linear form)
  • (3R,4S,5S,6R)-6-(hydroxymethyl)oxane-2,3,4,5-tetrol (cyclic form)
Other names
Blood sugars
Corn sugar
Grape sugar
3D model (JSmol)
Abbreviations Glc
EC Number
  • 200-075-1
MeSH Glucose
RTECS number
  • LZ6600000
  • InChI=1S/C6H12O6/c7-1-2-3(8)4(9)5(10)6(11)12-2/h2-11H,1H2/t2-,3-,4+,5-,6?/m1/s1 checkY
  • OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O
  • C([C@@H]1[C@H]([C@@H]([C@H]([C@H](O1)O)O)O)O)O
Molar mass 180.156 g/mol
Appearance White powder
Density 1.54 g/cm3
Melting point α-d-Glucose: 146 °C (295 °F; 419 K) β-d-Glucose: 150 °C (302 °F; 423 K)
909 g/L (25 °C (77 °F))
−101.5×10−6 cm3/mol
218.6 J/(K·mol)[2]
209.2 J/(K·mol)[2]
−1271 kJ/mol[3]
2,805 kJ/mol (670 kcal/mol)
B05CX01 (WHO) V04CA02 (WHO), V06DC01 (WHO)
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 0: Exposure under fire conditions would offer no hazard beyond that of ordinary combustible material. E.g. sodium chlorideFlammability 1: Must be pre-heated before ignition can occur. Flash point over 93 °C (200 °F). E.g. canola oilInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
Safety data sheet (SDS) ICSC 08655
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Glucose is a sugar with the molecular formula C6H12O6. Glucose is overall the most abundant monosaccharide,[4] a subcategory of carbohydrates. Glucose is mainly made by plants and most algae during photosynthesis from water and carbon dioxide, using energy from sunlight, where it is used to make cellulose in cell walls, the most abundant carbohydrate in the world.[5]

In energy metabolism, glucose is the most important source of energy in all organisms. Glucose for metabolism is stored as a polymer, in plants mainly as starch and amylopectin, and in animals as glycogen. Glucose circulates in the blood of animals as blood sugar. The naturally occurring form of glucose is d-glucose, while its stereoisomer l-glucose is produced synthetically in comparatively small amounts and is less biologically active.[6] Glucose is a monosaccharide containing six carbon atoms and an aldehyde group, and is therefore an aldohexose. The glucose molecule can exist in an open-chain (acyclic) as well as ring (cyclic) form. Glucose is naturally occurring and is found in its free state in fruits and other parts of plants. In animals, glucose is released from the breakdown of glycogen in a process known as glycogenolysis.

Glucose, as intravenous sugar solution, is on the World Health Organization's List of Essential Medicines.[7] It is also on the list in combination with sodium chloride.[7]

The name glucose is derived from Ancient Greek γλεῦκος (gleûkos, "wine, must"), from γλυκύς (glykýs, "sweet").[8][9] The suffix "-ose" is a chemical classifier, denoting a sugar.

  1. ^
  2. ^ a b Boerio-Goates, Juliana (1991), "Heat-capacity measurements and thermodynamic functions of crystalline α-D-glucose at temperatures from 10K to 340K", J. Chem. Thermodyn., 23 (5): 403–09, doi:10.1016/S0021-9614(05)80128-4
  3. ^ Ponomarev, V. V.; Migarskaya, L. B. (1960), "Heats of combustion of some amino-acids", Russ. J. Phys. Chem. (Engl. Transl.), 34: 1182–83
  4. ^ Domb, Abraham J.; Kost, Joseph; Wiseman, David (1998-02-04). Handbook of Biodegradable Polymers. CRC Press. p. 275. ISBN 978-1-4200-4936-7.
  5. ^ Kamide, Kenji (2005). Cellulose products and Cellulose Derivatives: Molecular Characterization and its Applications (1st ed.). Amsterdam: Elsevier. p. 1. ISBN 9780080454443. Retrieved 13 May 2021.
  6. ^ "L-glucose". Biology Articles, Tutorials & Dictionary Online. 2019-10-07. Retrieved 2022-05-06.
  7. ^ a b World Health Organization (2019). World Health Organization model list of essential medicines: 21st list 2019. Geneva: World Health Organization. hdl:10665/325771. WHO/MVP/EMP/IAU/2019.06. License: CC BY-NC-SA 3.0 IGO.
  8. ^ "Online Etymology Dictionary". Archived from the original on 2016-11-26. Retrieved 2016-11-25.
  9. ^ Thénard, Gay-Lussac, Biot, and Dumas (1838) "Rapport sur un mémoire de M. Péligiot, intitulé: Recherches sur la nature et les propriétés chimiques des sucres". Archived 2015-12-06 at the Wayback Machine (Report on a memoir of Mr. Péligiot, titled: Investigations on the nature and chemical properties of sugars), Comptes rendus, 7 : 106–113. From page 109. Archived 2015-12-06 at the Wayback Machine: "Il résulte des comparaisons faites par M. Péligot, que le sucre de raisin, celui d'amidon, celui de diabètes et celui de miel ont parfaitement la même composition et les mêmes propriétés, et constituent un seul corps que nous proposons d'appeler Glucose (1). ... (1) γλευχος, moût, vin doux." It follows from the comparisons made by Mr. Péligot, that the sugar from grapes, that from starch, that from diabetes and that from honey have exactly the same composition and the same properties, and constitute a single substance that we propose to call glucose (1) ... (1) γλευχος, must, sweet wine.

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