Rhamnose

Rhamnose can be isolated from Buckthorn (//Rhamnus//), poison sumac, and plants in the genus // Uncaria //. High-rhamnose extracts from the latter have found use in anti-wrinkle creams. Rhamnose is commonly bound to other sugars in nature. It is a common glycone component of glycosides from many plants. Rhamnose is also a component of the outer cell membrane of acid-fast bacteria in the Mycobacterium genus, which includes the organism that causes tuberculosis.
 * Rhamnose** (Rham) is a naturally occurring deoxy sugar . It can be classified as either 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.


 * Molecular formula || C6H12O5 ||
 * Molar mass || 164.16 g/mol ||
 * Exact mass || 164.068473 ||
 * Melting point || 91–93 °C (monohydrate) ||