alpha-L-Rhamnose
Synonym(s):6-Deoxy-L -mannose;6-Deoxyhexopyranose;6-Deoxymannose;L-Rhamnose
- CAS NO.：3615-41-6
- Empirical Formula: C6H12O5
- Molecular Weight: 164.16
- MDL number: MFCD00136036
- EINECS: 222-793-4
- SAFETY DATA SHEET (SDS)
- Update Date: 2025-03-16 22:27:45
What is alpha-L-Rhamnose ?
Chemical properties
White crystals. For equilibrium mixture optical rotation is +9.18 degrees. Very soluble in water and in methanol; soluble in absolute alcohol.
Chemical properties
L-Rhamnose has no odor, but has a very sweet taste.
The Uses of alpha-L-Rhamnose
Synthetic sweetener research.
What are the applications of Application
L-(+)-Rhamnose is a naturally occurring 6-deoxyhexose
Definition
ChEBI: The acyclic form of L-rhamnose.
Flammability and Explosibility
Not classified
Purification Methods
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.]
Properties of alpha-L-Rhamnose
| Melting point: | 91-95°C |
| Boiling point: | 251.61°C (rough estimate) |
| Density | 1.3058 (rough estimate) |
| refractive index | 1.6400 (estimate) |
| FEMA | 3730 | L-RHAMNOSE |
| storage temp. | 2-8°C |
| pka | 12.50±0.20(Predicted) |
| form | Solid |
| color | White to off-white |
| Odor | at 100.00 %. odorless |
| Water Solubility | 521.5g/L(40 ºC) |
| Merck | 8172 |
| CAS DataBase Reference | 3615-41-6(CAS DataBase Reference) |
| NIST Chemistry Reference | L-Mannose, 6-deoxy-(3615-41-6) |
| EPA Substance Registry System | L-Mannose, 6-deoxy- (3615-41-6) |
Safety information for alpha-L-Rhamnose
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for alpha-L-Rhamnose
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