Rhamnose

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Rhamnose
Rhamnose
α-L-rhamnose
Chemical name (2R, 3R,4R,5R,6S)-6-methyloxane-2,3,4,5-tetrol
Chemical formula C6H12O5
Molecular mass 164.16 g/mol
CAS number [10485-94-6]
Melting point 91-93 °C (monohydrate)
SMILES O[C@H]1C(C)O[C@@H]
(O)[C@@H](O)[C@@H]1O
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Rhamnose is a naturally-occurring 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.

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