Euxanthic acid

Euxanthic acid
Names
	IUPAC name (2S,3S,4S,5R,6S)-3,4,5-Trihydroxy-6-(8-hydroxy-9-oxo-9H-xanthen-2-yloxy)-tetrahydro-pyran-2-carboxylic acid
Identifiers
CAS Number	525-14-4 ;
3D model (JSmol)	Interactive image;
ChemSpider	21106448 ;
PubChem CID	44516816;
	InChI InChI=1S/C19H16O10/c20-9-2-1-3-11-12(9)13(21)8-6-7(4-5-10(8)28-11)27-19-16(24)14(22)15(23)17(29-19)18(25)26/h1-6,14-17,19-20,22-24H,(H,25,26)/t14-,15-,16+,17-,19+/m0/s1 Key: JGIDSJGZGFYYNX-YUAHOQAQSA-N ; InChI=1/C19H16O10/c20-9-2-1-3-11-12(9)13(21)8-6-7(4-5-10(8)28-11)27-19-16(24)14(22)15(23)17(29-19)18(25)26/h1-6,14-17,19-20,22-24H,(H,25,26)/t14-,15-,16+,17-,19+/m0/s1 Key: JGIDSJGZGFYYNX-YUAHOQAQBY;
	SMILES OC(=O)[C@H]4O[C@@H](Oc1ccc2Oc3cccc(O)c3C(=O)c2c1)[C@H](O)[C@@H](O)[C@@H]4O;
Properties
Chemical formula	C19H16O10
Molar mass	404.33 g·mol−1
Density	1.737 g/ml
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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	Infobox references

Euxanthic acid is a xanthonoid glycoside, a conjugate of the aglycone euxanthone with glucuronic acid. Its magnesium salt is the primary colourant of the pigment Indian Yellow.^[1]

References

↑ Katherine Spendel, Dr. M. Scott Goodman, Dr. Rebecca Ploeger and Dr. Aaron Shugar. "Preparation of a Synthetic Indian Yellow" (PDF). SUNY Buffalo. Retrieved July 11, 2018.

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Types of xanthonoids
Aglycones	Apetalinone A, B, C and D Bellidifolin Calozeyloxanthone Desoxygambogenin Desoxymorellin Euxanthone Forbesione Gambogellic acid Gambogenic acid Gambogenin Gambogenin dimethyl acetal Gambogic acid Gambogin Gaudichaudiic acid A, B, C, D and E Gaudichaudione A, B, C, D, E, F, G and H Hanburin Isogambogenin Isojacareubin Isomorellin Isomoreollin B Methylswertianin Morellic acid Morellin dimethyl acetal Moreollic acid Norathyriol Psorospermin 2,3′,4,6-tetrahydroxybenzophenone Tomentonone Zeyloxanthonone
Glycosides	Euxanthic acid Isomangiferin Mangiferin Mangostin-3,6-di-O-glucoside Wubangziside A Wubangziside B
Acetylated	Mangostin
Misc.	Indian yellow Gartanin 8-disoxygartanin Normangostin