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Glycogen structure


A polysaccharide that is the principal storage form of Glucose. Glycogen occurs naturally in the liver and muscles of mammals. Glycogen also is found in insects, fungi, and yeasts. It gives a positive test for Starch with Iodine (i.e. blue color).

Synonyms and Related Terms

animal starch; liver starch; Glykogen (Dan., Deut., Nor., Sven.); glucógeno (Esp.); glycogène (Fr.); glicogeno (It.); glycogeen (Ned.); glikogen (Pol.); glicogénio (Port.);


  • ThermoFisher: SDS

Physical and Chemical Properties

Soluble in water. Insoluble in ethanol.

Composition C6H10O5
CAS 9005-79-2
Molecular Weight mol. wt. > 300,000

Resources and Citations

  • Thomas Gregory, The Condensed Chemical Dictionary, Reinhold Publishing, New York, 3rd ed., 1942
  • G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 138
  • The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 4506

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