Rhamnose

Structural formula
Fischer projection , open-chain representation
General
Surname	L - (+) - rhamnose
Molecular formula	C 6 H 12 O 5
Brief description	colorless and odorless solid (monohydrate)
External identifiers / databases
CAS number 3615-41-6 [ L - (+) - rhamnose] 634-74-2 [ D -Rhamnose] 10485-94-6 [ DL -Rhamnose] 6014-42-2 (α- L -rhamnopyranose) 6155-36-8 (β- L -rhamnopyranose) 50769-40-9 (α- L -rhamnofuranose) 10030-85-0 ( L- rhamnose, monohydrate) EC number 222-793-4 ECHA InfoCard 100.020.722 PubChem 19233 DrugBank DB02961 Wikidata Q414109
properties
Molar mass	164.16 g mol −1
Physical state	firmly
density	1.47 g cm −3 (monohydrate)
Melting point	85–95 ° C (monohydrate)
solubility	easily soluble in water
safety instructions
GHS labeling of hazardous substances no GHS pictograms H and P phrases H: no H-phrases P: no P-phrases
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Rhamnose is a naturally occurring 6-deoxy single sugar ( monosaccharide ), which consists of six carbon atoms ( hexose ) and is stereochemically derived from mannose (6-deoxymannose).

In contrast to the other naturally occurring sugars, this one is only available in the L form as a component of pectin chains. Some flavors are also synthesized from rhamnose. Its breakdown products are partly responsible for the odor of human flatus .

α- L -rhamnopyranose, the cyclic pyranose form of L -rhamnose.

The name is derived from the occurrence of L- rhamnose in buckthorn plants , whose botanical name is Rhamnaceae .

Based on sucrose , a 10% D- rhamnose solution has a sweetening power of 33%.

Web links

Commons : Rhamnose  - collection of images, videos and audio files

Individual evidence

1. ↑ ^{a b c d e f} Rhamnose data sheet (PDF) from Merck , accessed on December 23, 2019.
2. ↑ Hans-Dieter Belitz, Werner Grosch and Peter Schieberle: Textbook of food chemistry . Springer, Berlin; 6th, completely revised edition 2008; ISBN 978-3-540-73201-3 ; P. 263.