L(+)-Rhamnose monohydrate
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L(+)-Rhamnose monohydrate
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CAS No:
10030-85-0
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Formula:
C6H14O6
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Chemical Name:
L(+)-Rhamnose monohydrate
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Synonyms:
RHAMNOSE, L-(+)-;ISODULCIT;ISODULCIT MONOHYDRATE;L-RHA H2O;L-(+)-RHAMMNOSE MONOHYDRATE;L-(+)-RHAMNOPYRANOSE, MONOHYDRATE;L-(+)-RHAMNOSE;L-(+)-RHAMNOSE HYDRATE
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CAS No:
Description
White crystals or crystalline powder
L-Rhamnose is a part of plant cell wall polysaccharides, rhamnogalacturonan I and rhamnogalacturonan. It is also present in bacterial cell walland a major antigenic determinant contributing to its pathogenicity. L-rhamnose is non-absorbable in humans but is fermented by intestinal microbes. Supplementation of L-rhamnose slows down gastric emptying. L-rhamnose monosaccharide conjugated immunogens have applications in cancer immunotherapies. Intake of L-rhamnose elevates serum propionate levels.
Crystallise the rhamnose from H2O or EtOH. It crystallises easily as the monohydrate by evaporating a solution in MeOH (90%) and H2O (10%). It is also purified by dissolving in a small volume of EtOH, adding a few drops of H2O and cooling. 1H NMR in D2O at 44o contains 60% -pyranose and 40% -pyranose forms [Angyal Adv Carbohydr Chem 42 15 1984.] [Smith J Chem Soc 1035 1940, McGeachin & Beevers Acta Cryst 10 227,230 197, Beilstein 1 IV 4261.]
Characteristics
99
-2.41550
White Crystals or Crystalline Powder
1.47
90-95 °C(lit.)
323.9°C at 760 mmHg
149.7ºC
1.593
300 g/L (20 ºC)
Refrigerator
1.99E-05mmHg at 25°C
8.2 º (c=4.5,H2O)
Odorless
Inert atmosphere,Room Temperature
L(+)-Rhamnose monohydrate Use and Manufacturing
Composition of plum leaf polysaccharides.
L-Rhamnose monohydrate is a deoxy sugar in plants and bacteria. It is a component of plant cell walls that helps maintain structure. L-Rhamnose monohydrate is used as a starting material for the production of furanones. It is an important material involved in the reaction of flavors developed during the preparation of various foods like bread, grilled meats, etc.
L-Rhamnose monohydrate is a deoxy sugar found in plants and bacteria.
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