Stachyose

Stachyose

Names
IUPAC name (2R,3R,4S,5R,6R)-2-[(2S,3S,4S,5R)- 3,4-Dihydroxy-2,5-bis(hydroxymethyl) oxolan-2-yl]oxy-6-[ [(2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-[ [(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6- (hydroxymethyl)oxan-2-yl]oxymethyl] oxan-2-yl]oxymethyl]oxane-3,4,5-triol
Other names β-D-Fructofuranosyl-O-α-D -galactopyranosyl-(1→6)-O-α-D -galactopyranosyl-(1→6)-α- D-glucopyranoside
Identifiers
CAS Number	470-55-3 Y
ChEBI	CHEBI:17164 N
ChemSpider	388624 N
EC Number	207-427-3
Jmol 3D model	Interactive image
PubChem	91455 439531
UNII	25VX64653N N
InChI InChI=1S/C24H42O21/c25-1-6-10(28)14(32)17(35)21(41-6)39-3-8-11(29)15(33)18(36)22(42-8)40-4-9-12(30)16(34)19(37)23(43-9)45-24(5-27)20(38)13(31)7(2-26)44-24/h6-23,25-38H,1-5H2/t6-,7-,8-,9-,10+,11+,12-,13-,14+,15+,16+,17-,18-,19-,20+,21+,22+,23-,24+/m1/s1 N Key: UQZIYBXSHAGNOE-XNSRJBNMSA-N N InChI=1/C24H42O21/c25-1-6-10(28)14(32)17(35)21(41-6)39-3-8-11(29)15(33)18(36)22(42-8)40-4-9-12(30)16(34)19(37)23(43-9)45-24(5-27)20(38)13(31)7(2-26)44-24/h6-23,25-38H,1-5H2/t6-,7-,8-,9-,10+,11+,12-,13-,14+,15+,16+,17-,18-,19-,20+,21+,22+,23-,24+/m1/s1 Key: UQZIYBXSHAGNOE-XNSRJBNMBB
SMILES C([C@@H]1[C@@H]([C@@H]([C@H]([C@H](O1)OC[C@@H]2[C@@H]([C@@H]([C@H]([C@H](O2)OC[C@@H]3[C@H]([C@@H]([C@H]([C@H](O3)O[C@]4([C@H]([C@@H]([C@H](O4)CO)O)O)CO)O)O)O)O)O)O)O)O)O)O
Properties
Chemical formula	C24H42O21
Molar mass	666.578 g/mol
Vapor pressure	{{{value}}}
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N verify (what is YN ?)
Infobox references

Stachyose is a tetrasaccharide consisting of two α-D-galactose units, one α-D-glucose unit, and one β-D-fructose unit sequentially linked as gal(α1→6)gal(α1→6)glc(α1↔2β)fru. Together with related oligosaccharides such as raffinose, Stachyose occurs naturally in numerous vegetables (e.g. green beans, soybeans and other beans) and other plants.

Stachyose is less sweet than sucrose, at about 28% on a weight basis. It is mainly used as a bulk sweetener or for its functional oligosaccharide properties. Stachyose is not completely digestible by humans and delivers 1.5 to 2.4 kcal/g (6 to 10 kJ/g).

External links

• ChemSub Online: Stachyose