Stachyose

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)Fruf.^[1] Together with related oligosaccharides such as raffinose, stachyose occurs naturally in numerous vegetables (e.g. green beans, soybeans and other beans) and other plants.

Quick facts Names, Identifiers ...

Stachyose

Names
IUPAC name β-D-Fructofuranosyl O-α-D-galactopyranosyl-(1→6)-α-D-galactopyranosyl-(1→6)-α-D-glucopyranoside
Systematic IUPAC name (12S,13S,14S,15R,32R,33R,34S,35S,36R,62S,63R,64S,65R,66R,92S,93R,94S,95R,96R)-12,15,96-Tris(hydroxymethyl)-2,5,8-trioxa-3,6(2,6),9(2)-tris(oxana)-1(2)-oxolananonaphane-13,14,33,34,35,63,64,65,93,94,95-undecol
Identifiers
CAS Number	470-55-3 Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:17164 Y
ChemSpider	388624 Y
ECHA InfoCard	100.006.754
EC Number	207-427-3
PubChem CID	91455 439531
UNII	25VX64653N Y
CompTox Dashboard (EPA)	DTXSID30889345
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 Y Key: UQZIYBXSHAGNOE-XNSRJBNMSA-N Y
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
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

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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.^{[2][additional citation(s) needed]} Stachyose is not completely digestible by humans and delivers 1.5 to 2.4 kcal/g (6 to 10 kJ/g).