Threose

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Structural formula
Structure of threose
Fischer projection , open-chain representation
General
Surname Threose
other names
  • (2 S , 3 R ) -2,3,4-trihydroxybutanal
  • (2 R , 3 S ) -2,3,4-trihydroxybutanal
Molecular formula C 4 H 8 O 4
Brief description

syrupy, colorless liquid

External identifiers / databases
CAS number
  • 95-43-2 ( D -Threose)
  • 95-44-3 ( L -Threose)
EC number 202-418-0
ECHA InfoCard 100.002.199
PubChem 439665
ChemSpider 388736
Wikidata Q423233
properties
Molar mass 120.10 g mol −1
Physical state

liquid

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 .

Threose is a monosaccharide from the group of tetroses . There are two stereoisomers , the D- threose and the L- threose . Due to the terminal aldehyde group, they belong to the aldoses . The IUPAC name of the D form is (2 S , 3 R ) -2,3,4-trihydroxybutanal. L- threose [synonym: (2 R , 3 S ) -2,3,4-trihydroxybutanal] is of little importance. If “Threose” is mentioned in this text or in the scientific literature without any additional name ( prefix ), D- Threose is meant. The erythrose is a diastereomer of Threose.

The stereochemical configuration of threose gives its name to the descriptor threo - which is used as a semi-systematic addition to the name to identify molecules with similar configurations.

Reactions

The oxidation of threose, for example with nitric acid , produces tartaric acid . During the reduction, for example with sodium borohydride , threit is formed .

literature

Individual evidence

  1. ↑ a b c data sheet D -Threose from Sigma-Aldrich , accessed on June 13, 2011 ( PDF ).

Web links

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