N -acetylgalactosamine

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Structural formula
Structure of N-acetylgalactosamine
General
Surname 2-acetylamino-2-deoxy- D -galactopyranose
other names
  • 2-acetamido-2-deoxy- D -galactopyranose
  • N -acetylgalactosamine
  • GalNAc
Molecular formula C 8 H 15 NO 6
Brief description

white solid

External identifiers / databases
CAS number
  • 14215-68-0 (α-pyranose form, see figure)
  • 14131-60-3 (β-pyranose form)
  • 6082-29-7 (pyranose form, anomeric mixture)
  • 31022-50-1 (open-chain form)
  • 1811-31-0
PubChem 84265
ChemSpider 76020
Wikidata Q285835
properties
Molar mass 221.21 g mol −1
Physical state

firmly

Melting point

158-162 ° C

solubility

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 .

N -acetylgalactosamine is the common name for 2-acetylamino-2-deoxy- D -galactose, a derivative of galactose or galactosamine .

It serves as a building block for the construction of glycolipids (e.g. gangliosides ) and glycoproteins of the cell membrane as well as for hyaluronic acid and other mucopolysaccharide proteins .

Blood group antigen A contains N- acetylgalactosamine, blood group antigen B contains galactose instead and blood group 0 lacks this sugar residue.

Individual evidence

  1. ↑ a b c Data sheet N-Acetylgalactosamine from Acros, accessed on February 26, 2010.
  2. ↑ Data sheet N-Acetyl-D-galactosamine from Sigma-Aldrich , accessed on May 29, 2011 ( PDF ).