Fisetin

Fisetin
Names
	IUPAC name 3,3′,4′,7-Tetrahydroxyflavone
	Systematic IUPAC name 2-(3,4-Dihydroxyphenyl)-3,7-dihydroxy-4H-1-benzopyran-4-one
	Other names 2-(3,4-Dihydroxyphenyl)-3,7-dihydroxychromen-4-one; Cotinin (not to be confused with Cotinine); 5-Deoxyquercetin; Superfustel; Fisetholz; Fietin; Fustel; Fustet; Viset; Junger fustik
Identifiers
CAS Number	528-48-3 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:42567 ;
ChEMBL	ChEMBL31574 ;
ChemSpider	4444933 ;
DrugBank	DB07795 ;
ECHA InfoCard	100.007.669
IUPHAR/BPS	5182;
KEGG	C10041 ;
PubChem CID	5281614;
UNII	OO2ABO9578 ;
CompTox Dashboard (EPA)	DTXSID4022317 ;
	InChI InChI=1S/C15H10O6/c16-8-2-3-9-12(6-8)21-15(14(20)13(9)19)7-1-4-10(17)11(18)5-7/h1-6,16-18,20H Key: XHEFDIBZLJXQHF-UHFFFAOYSA-N ; InChI=1/C15H10O6/c16-8-2-3-9-12(6-8)21-15(14(20)13(9)19)7-1-4-10(17)11(18)5-7/h1-6,16-18,20H Key: XHEFDIBZLJXQHF-UHFFFAOYAQ;
	SMILES O=C1c3c(O/C(=C1/O)c2ccc(O)c(O)c2)cc(O)cc3;
Properties
Chemical formula	C15H10O6
Molar mass	286.2363 g/mol
Density	1.688 g/mL
Melting point	330 °C (626 °F; 603 K)
	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

Fisetin (7,3′,4′-flavon-3-ol) is a plant flavonol from the flavonoid group of polyphenols. It occurs in many plants where it serves as a yellow pigment. It is found in many fruits and vegetables, such as strawberries, apples, persimmons, onions, and cucumbers.

Its chemical formula was first described by Austrian chemist Josef Herzig in 1891.