Eupalin

Eupalin is a flavonol. It is the eupalitin 3-O-rhamnoside. It can be isolated from Eupatorium ligustrinum.[1]

Eupalin

Names
IUPAC name 5-Hydroxy-2-(4-hydroxyphenyl)-6,7-dimethoxy-3-(3,4,5-trihydroxy-6-methyloxan-2-yl)oxychromen-4-one
Identifiers
CAS Number	29617-75-2
3D model (JSmol)	Interactive image
ChEMBL	ChEMBL483203
ChemSpider	4508995 4572250
PubChem CID	5458259
CompTox Dashboard (EPA)	DTXSID70952087
InChI InChI=1S/C23H24O11/c1-9-15(25)18(28)19(29)23(32-9)34-22-17(27)14-12(8-13(30-2)21(31-3)16(14)26)33-20(22)10-4-6-11(24)7-5-10/h4-9,15,18-19,23-26,28-29H,1-3H3/t9-,15-,18+,19+,23-/m0/s1 Key: CXVSHWFUBVZVSW-YPNBZCAISA-N InChI=1/C23H24O11/c1-9-15(25)18(28)19(29)23(32-9)34-22-17(27)14-12(8-13(30-2)21(31-3)16(14)26)33-20(22)10-4-6-11(24)7-5-10/h4-9,15,18-19,23-26,28-29H,1-3H3/t9-,15-,18+,19+,23-/m0/s1 Key: CXVSHWFUBVZVSW-YPNBZCAIBS
SMILES C[C@H]1[C@@H]([C@H]([C@H]([C@@H](O1)OC2=C(OC3=CC(=C(C(=C3C2=O)O)OC)OC)C4=CC=C(C=C4)O)O)O)O
Properties
Chemical formula	C23H24O11
Molar mass	476.434 g·mol^−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

References

1. The structures of eupalin and eupatolin. Two new flavonol rhamnosides isolated from Eupatorium ligustrinum D.C. L. Quijano, F. Malanco and Tirso Ríos, Tetrahedron, Volume 26, Issue 12, 1970, pages 2851-2859, doi:10.1016/S0040-4020(01)92863-7