4981 D-Xylose Xylose or wood sugar is an aldopentose - a monosaccharide containing five carbon atoms and an aldehyde functional group. It has chemical formula C5H10O5 and is 40% as sweet as sucrose. Xylose is found in the embryos of most edible plants. The polysaccharide xylan, which is closely associated with cellulose, consists practically entirely of d-xylose. Corncobs, cottonseed hulls, pecan shells, and straw contain considerable amounts of this sugar. Xylose is also found in mucopolysaccharides of connective tissue and sometimes in the urine. Xylose is the first sugar added to serine or threonine residues during proteoglycan type O-glycosylation. Therefore xylose is involved in the biosythetic pathways of most anionic polysaccharides such as heparan sulphate and chondroitin sulphate. In medicine, xylose is used to test for malabsorption by administering a xylose solution to the patient after fasting. If xylose is detected in the blood and/or urine within the next few hours, it has been absorbed by the intestines. Xylose 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. (Wikipedia). 58-86-6 135191 C5H10O5 White powder. 90.5 °C 555.0 mg/mL No indication of carcinogenicity to humans (not listed by IARC). 2014-09-11T05:22:47Z 2026-04-14T17:45:00Z http://en.wikipedia.org/wiki/ Wood sugar C00181 53455 XYLOSE DB09419 true O[C@@H]1COC(O)[C@H](O)[C@H]1O C5H10O5 InChI=1S/C5H10O5/c6-2-1-10-5(9)4(8)3(2)7/h2-9H,1H2/t2-,3+,4-,5?/m1/s1 SRBFZHDQGSBBOR-IOVATXLUSA-N 150.1299 150.05282343 Exogenous Solid HMDB00098 119104 Lavarack, B. P.; Griffin, G.; Rodman, D. Optimizing the autohydrolysis of bagasse to extract D-xylose. Proceedings of the Conference of the Australian Society of Sugar Cane Technologists (1999), 21st 394-400. CHEM003882 DTXSID0023745 NS00071570 (3R,4S,5R)-oxane-2,3,4,5-tetrol