Ombuin

Ombuin
Names
	IUPAC name 3,3′,5-Trihydroxy-4′,7-dimethoxyflavone
	Systematic IUPAC name 3,5-Dihydroxy-2-(3-hydroxy-4-methoxyphenyl)-7-methoxy-4H-1-benzopyran-4-one
	Other names 4′,7-Dimethylquercetin; 7,4′-Di-O-methylquercetin; 4′,7-Dimethoxy-3,3′,5-trihydroxyflavone
Identifiers
CAS Number	529-40-8 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:67493 ;
ChemSpider	4478412 ;
PubChem CID	5320287;
UNII	Z3K3F0YR3W ;
CompTox Dashboard (EPA)	DTXSID00200942 ;
	InChI InChI=1S/C17H14O7/c1-22-9-6-11(19)14-13(7-9)24-17(16(21)15(14)20)8-3-4-12(23-2)10(18)5-8/h3-7,18-19,21H,1-2H3 Key: BWORNNDZQGOKBY-UHFFFAOYSA-N ; InChI=1/C17H14O7/c1-22-9-6-11(19)14-13(7-9)24-17(16(21)15(14)20)8-3-4-12(23-2)10(18)5-8/h3-7,18-19,21H,1-2H3 Key: BWORNNDZQGOKBY-UHFFFAOYAW;
	SMILES COC1=C(C=C(C=C1)C2=C(C(=O)C3=C(C=C(C=C3O2)OC)O)O)O;
Properties
Chemical formula	C17H14O7
Molar mass	330.29 g/mol
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Ombuin is an O-methylated flavonol, a type of flavonoid. It is the 4',7-O-methyl derivative of quercetin.

Ombuin can be found in species of the genus Erythroxylum. It can also be synthesized. Ombuin 3-sulfate can be isolated from Flaveria chlorifolia.