D-Galacturonic acid

D-Galacturonic acid
Names
	IUPAC name (2S,3R,4S,5R)-2,3,4,5-Tetrahydroxy-6-oxo-hexanoic acid
Identifiers
CAS Number	685-73-4;
3D model (JSmol)	Interactive image;
ChemSpider	388354;
ECHA InfoCard	100.035.495
EC Number	211-682-6;
PubChem CID	84740;
CompTox Dashboard (EPA)	DTXSID2042646 ;
	InChI InChI=1/C6H10O7/c7-1-2(8)4(5(10)11)13-6(12)3(1)9/h1-4,6-9,12H,(H,10,11)/t1-,2+,3+,4-,6?/m0/s1 Key: AEMOLEFTQBMNLQ-YMDCURPLBW;
	SMILES O=C(O)[C@H]1OC(O)[C@H](O)[C@@H](O)[C@H]1O;
Properties
Chemical formula	C6H10O7
Molar mass	194.139
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

D-Galacturonic acid is a sugar acid, an oxidized form of D-galactose. It is the main component of pectin, in which it exists as the polymer polygalacturonic acid. It has an aldehyde group at C1 and a carboxylic acid group at C6. Other oxidized forms of D-galactose are D-galactonic acid (carboxylic group at C1) and meso-galactaric acid (mucic acid) (carboxylic groups at C1 and C6). It is also a uronic acid or hexuronic acid. Naturally occurring uronic acids are D-glucuronic acid, D-galacturonic acid, L-iduronic acid and D-mannuronic acid.