Aldose

An aldose is a monosaccharide (a simple sugar) containing one aldehyde group per molecule and having a chemical formula of the form Cn(H2O)n(n>=3).

With only 3 carbon atoms, glyceraldehyde is the simplest of all aldoses.

Aldoses isomerize to ketoses in the Lobry-de Bruyn-van Ekenstein transformation. Aldose differs from ketose in that it has a carbonyl group at the end of the carbon chain whereas the carbonyl group of a ketose is in the middle; this fact allows them to be chemically differentiated through Seliwanoff's test.

[edit] List of aldoses

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v • d • e Types of Carbohydrates

General:	Aldose \| Ketose \| Pyranose \| Furanose

Geometry	Triose \| Tetrose \| Pentose \| Hexose \| Heptose \| Cyclohexane conformation \| Anomer \| Mutarotation

Small/Large	Glyceraldehyde \| Dihydroxyacetone \| Erythrose \| Threose \| Erythrulose \| Sedoheptulose

Trioses	Ketotriose (Dihydroxyacetone) \| Aldotriose (Glyceraldehyde)

Tetroses	Erythrulose \| Erythrose \| Threose

Pentoses	Arabinose \| Deoxyribose \| Lyxose \| Ribose \| Ribulose \| Xylose \| Xylulose

Hexoses	Glucose \| Galactose \| Mannose \| Gulose \| Idose \| Talose \| Allose \| Altrose \| Fructose \| Sorbose \| Tagatose \| Psicose \| Fucose \| Fuculose \| Rhamnose

Disaccharides	Sucrose \| Lactose \| Trehalose \| Maltose

Polymers	Glycogen \| Starch (Amylose \| Amylopectin) \| Cellulose \| Chitin \| Stachyose \| Inulin \| Dextrin

Glycosaminoglycans	Heparin \| Chondroitin sulfate \| Hyaluronan \| Heparan sulfate \| Dermatan sulfate \| Keratan sulfate

Aminoglycosides	Kanamycin \| Streptomycin \| Tobramycin \| Neomycin \| Paromomycin \| Apramycin \| Gentamicin \| Netilmicin \| Amikacin

Major families of biochemicals Peptides \| Amino acids \| Nucleic acids \| Carbohydrates \| Nucleotide sugars \| Lipids \| Terpenes \| Carotenoids \| Tetrapyrroles \| Enzyme cofactors \| Steroids \| Flavonoids \| Alkaloids \| Polyketides \| Glycosides