Rhamnazin

Rhamnazin
Names
	IUPAC name 3,5-Dihydroxy-2-(4-hydroxy-3-methoxyphenyl)-7-methoxy-4H-chromen-4-one
	Other names 3',7-Dimethylquercetin; 3,5,4'-Trihydroxy-7,3'-dimethoxyflavone; 5,3',4'-Trihydroxy-3,7-dimethoxyflavone; Flavone, 3,4',5-trihydroxy-3',7-dimethoxy-
Identifiers
CAS Number	552-54-5 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:133721 ;
ChEMBL	ChEMBL457148 ;
ChemSpider	4478873 ;
PubChem CID	5320945;
UNII	276CK9GP9Y ;
CompTox Dashboard (EPA)	DTXSID00203695 ;
	InChI InChI=1S/C17H14O7/c1-22-9-6-11(19)14-13(7-9)24-17(16(21)15(14)20)8-3-4-10(18)12(5-8)23-2/h3-7,18-19,21H,1-2H3 Key: MYMGKIQXYXSRIJ-UHFFFAOYSA-N ; InChI=1/C17H14O7/c1-22-9-6-11(19)14-13(7-9)24-17(16(21)15(14)20)8-3-4-10(18)12(5-8)23-2/h3-7,18-19,21H,1-2H3 Key: MYMGKIQXYXSRIJ-UHFFFAOYAP;
	SMILES COC1=CC(=C2C(=C1)OC(=C(C2=O)O)C3=CC(=C(C=C3)O)OC)O;
Properties
Chemical formula	C17H14O7
Molar mass	330.292 g·mol−1
	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

Rhamnazin is an O-methylated flavonol, a type of chemical compound. It can be found in Rhamnus petiolaris,[1] a buckthorn plant endemic to Sri Lanka.

Metabolism

The enzyme 3,7-dimethylquercetin 4'-O-methyltransferase uses S-adenosyl methionine and rhamnazin to produce S-adenosyl homocysteine and ayanin.

Wagner, H.; Ertan, M.; Seligmann, O. (1974). "Rhamnazin- und rhamnetin-3-O-trioside aus Rhamnus petiolaris". Phytochemistry (in German). 13 (5): 857–860. doi:10.1016/S0031-9422(00)91151-8.

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