Xylose

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Xylose
α-D-xylose
Chemical name	Xylose
Chemical formula	C₅H₁₀O₅
Molecular mass	150.13 g/mol
CAS number	D: [58-86-6] L: [609-06-3] DL: [41247-05-6]
Melting point	144-145 °C
SMILES	OC1COC(O)C(O)C1O
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Xylose or wood sugar is an aldopentose — a monosaccharide containing five carbon atoms and including an aldehyde functional group. It has chemical formula C₅H₁₀O₅. Xylose is found in the embryos of most edible plants.

It is said to be one of eight sugars which are essential for human nutrition, the others being galactose, glucose, mannose, N-acetylglucosamine, N-acetylgalactosamine, fucose, and sialic acid (formally, N-acetylneuraminic acid).

Xylose is used to test for malabsorption by administering to the patient in water after fasting. If xylose is detected in blood and/or urine within the next few hours, it has been absorbed by the intestines.^[1]

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^ http://www.nlm.nih.gov/medlineplus/ency/article/003606.htm

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Analogues of nucleic acids:	Types of Carbohydrates	Analogues of nucleic acids:
General:	Aldose \| Ketose \| Pyranose \| Furanose
Geometry:	Pentose \| Hexose \| Heptose \| Cyclohexane conformation \| Anomer \| Mutarotation
Small/Large:	Glyceraldehyde \| Dihydroxyacetone \| Erythrose \| Threose \| Erythrulose \| Sedoheptulose
Pentoses:	Ribose \| Arabinose \| Xylose \| Lyxose \| Ribulose \| Xylulose
Hexoses:	Glucose \| Galactose \| Mannose \| Gulose \| Idose \| Talose \| Allose \| Altrose \| Fructose \| Sorbose \| Tagatose \| Psicose \| Fucose \| Rhamnose
Disaccharides:	Sucrose \| Lactose \| Trehalose \| Maltose
Polymers:	Glycogen \| Starch \| Cellulose \| Chitin \| Amylose \| Amylopectin \| Stachyose \| Inulin \| Dextrin
Glycosaminoglycans:	Heparin \| Chondroitin sulfate \| Hyaluronan \| Heparan sulfate \| Dermatan sulfate \| Keratan sulfate
Aminoglycosides:	Kanamycin \| Streptomycin \| Tobramycin \| Neomycin \| Paromomycin \| Apramycin \| Gentamicin \| Netilmicin \| Amikacin