Retusin (flavonol)

Not to be confused with retusin (isoflavone).

Retusin is an O-methylated flavonol, a type of flavonoid. It can be found in Origanum vulgare^[1] and in Ariocarpus retusus.^[2]

Retusin

Names
IUPAC name 5-Hydroxy-3,3′,4′,7-tetramethoxyflavone
Systematic IUPAC name 2-(3,4-Dimethoxyphenyl)-5-hydroxy-3,7-dimethoxy-4H-1-benzopyran-4-one
Other names Quercetin tetramethylether Quercetin-3,7,3',4'-tetramethyl ether Tetramethylquercetin Retusine
Identifiers
CAS Number	1245-15-4^Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:144861
ChEMBL	ChEMBL77966^N
ChemSpider	4508983^N
ECHA InfoCard	100.013.629
EC Number	214-991-4
PubChem CID	5352005
UNII	M8591903SD^Y
CompTox Dashboard (EPA)	DTXSID60924839
InChI InChI=1S/C19H18O7/c1-22-11-8-12(20)16-15(9-11)26-18(19(25-4)17(16)21)10-5-6-13(23-2)14(7-10)24-3/h5-9,20H,1-4H3^N Key: HHGPYJLEJGNWJA-UHFFFAOYSA-N^N InChI=1/C19H18O7/c1-22-11-8-12(20)16-15(9-11)26-18(19(25-4)17(16)21)10-5-6-13(23-2)14(7-10)24-3/h5-9,20H,1-4H3 Key: HHGPYJLEJGNWJA-UHFFFAOYAJ
SMILES COC1=C(C=C(C=C1)C2=C(C(=O)C3=C(C=C(C=C3O2)OC)O)OC)OC
Properties
Chemical formula	C19H18O7
Molar mass	358.34 g/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is ^YN ?) Infobox references

References

1. Exudate flavones and flavanones in Origanum species and their interspecific variation. Melpomene Skoula, Renée J. Grayer, Geoffrey C. Kite and Nigel C. Veitch, Biochemical Systematics and Ecology, Volume 36, Issue 8, August 2008, Pages 646-654
2. Retusin (Ariocarpus) on kanaya.naist.jp