Euxanthic acid

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]

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^Y
3D model (JSmol)	Interactive image
ChemSpider	21106448^Y
PubChem CID	44516816
CompTox Dashboard (EPA)	DTXSID10659245
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^Y Key: JGIDSJGZGFYYNX-YUAHOQAQSA-N^Y 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	404.327 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

References

1. 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.CS1 maint: multiple names: authors list (link)