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  • Name: L-Rhamnose
  • * CAS #: 6155-35-7
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NAME】:L-Rhamnose
【SYNONYMS】:alpha-L-Rhamnose, 6-deoxy-L-mannose, isodulcit
【SPEC.】:98%
【TEST METHOD】: HPLC 
【PLANT SOURCE】:Isoln from walls of gram-negative bateria. From leaves of Solanum chacoense Bitter
【CAS NO.】:6155-35-7
【MOLECULAR FORMULA & MOLECULAR Mass】:C6H12O5  164.16
【STRUCTURAL FORMULA】:                          
【CHARACTERISTIC】:α-Form. Mp 82-92°C. β-Form. mp 122-126°C(rapid heating). Freely sol in water, methol and ethanol. colourless crystal
【PHARMACOLOGY】:Rhamnose is a naturally-occurring deoxy sugar. It can be classified either as a methyl-pentose or a 6-deoxy-hexose. Rhamnose occurs in nature in its L-form as L-rhamnose (6-deoxy-L-mannose). This is unusual since most of the naturally-occurring sugars are in D-form. Exceptions are the methyl pentoses L-fucose and L-rhamnose and the pentose L-arabinose.
L-Rhamnose can be isolated from Buckthorn (Rhamnus) and poison sumac. It is also found as a glycoside in a variety of other plants. Rhamnose is a component of the outer cell membrane of acid-fast bacteria in the Mycobacterium genus, which includes the organsism that causes tuberculosis
【CHEMICAL ANALYSIS】
    

ITEMS

RESULTS

Assay(HPLC)

≥98%

Loss on Drying

≤10.0%

Sulphated ashes

≤0.1%

Heavy metals

≤10ppm

Melting Range

90-94℃(Monohydrate)

Specific Rotation

+8.8°-9.15°

Related Substances

Conform prescribed

Appearance of Solution

(10% w/v Apueous Solution)

Clear and colouless

【PACKAGE】:Packed in paper-drums and two plastic-bags inside.N.W.:25kgs .
【STORAGE】:Keep in cool, dry and dark place, avoid high temperature.
【SHELF LIFE】:24 months