Diose

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Glycolaldehyde is the only diose

A diose is a monosaccharide containing two carbon atoms. Because the general chemical formula of an unmodified monosaccharide is (C·H₂O)_n, where n is three or greater, it does not meet the formal definition of a monosaccharide. However, since it does fit the formula (C·H₂O)_n, it is sometimes thought of as the most basic sugar. There is only one possible diose, glycolaldehyde (2-hydroxyethanal), which is an aldodiose (a ketodiose is not possible since there are only two carbons).

Dioses	Aldodiose Glycolaldehyde

Trioses	Aldotriose Glyceraldehyde Ketotriose Dihydroxyacetone

Tetroses	Aldotetroses Erythrose Threose Ketotetrose Erythrulose

Pentoses	Aldopentose Arabinose Lyxose Ribose Xylose Deoxy sugar Deoxyribose Ketopentose Ribulose Xylulose

Hexoses	Aldohexose Allose Altrose Galactose Glucose Gulose Idose Mannose Talose Deoxy sugar Fucose Fuculose Rhamnose Ketohexose Fructose Psicose Sorbose Tagatose

Heptoses	Ketoheptose Mannoheptulose Sedoheptulose

>7	Octose Nonose Neuraminic acid

Multiple

Disaccharides	Cellobiose Lactose Lactulose Maltose Sucrose Trehalose Turanose

Trisaccharides	Maltotriose Melezitose Raffinose

Tetrasaccharides	Stachyose

Other oligosaccharides	Acarbose Fructooligosaccharide (FOS) Galactooligosaccharide (GOS) Isomaltooligosaccharide (IMO) Maltodextrin Mannan-oligosaccharides (MOS)

Polysaccharides	Beta-glucan Lentinan Sizofiran Zymosan Cellulose Chitin Dextrin / Dextran Fructose / Fructan Inulin Galactose / Galactan Glucose / Glucan Glycogen Levan beta 2→6 Mannan Starch Amylopectin Amylose

Biochemical families: carbohydrates
- alcohols
- glycoproteins
- glycosides
lipids
- eicosanoids
- fatty acids / intermediates
- phospholipids
- sphingolipids
- steroids
nucleic acids
- constituents / intermediates
proteins
- Amino acids / intermediates
tetrapyrroles / intermediates

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Diose

See also