Calycosin

Calycosin
Names
	IUPAC name 7-hydroxy-3-(3-hydroxy-4-methoxyphenyl)chromen-4-one
	Other names 7,3'-dihydroxy-4'-methoxyisoflavone; 3',7-dihydroxy-4'-methoxyisoflavone; 3'-hydroxyformononetin
Identifiers
CAS Number	20575-57-9 =;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:17793 ;
ChEMBL	ChEMBL241608 ;
ChemSpider	4444104 ;
ECHA InfoCard	100.222.904
PubChem CID	5280448;
UNII	09N3E8P7TA ;
CompTox Dashboard (EPA)	DTXSID70174580 ;
	InChI InChI=1S/C16H12O5/c1-20-14-5-2-9(6-13(14)18)12-8-21-15-7-10(17)3-4-11(15)16(12)19/h2-8,17-18H,1H3 Key: ZZAJQOPSWWVMBI-UHFFFAOYSA-N ; InChI=1/C16H12O5/c1-20-14-5-2-9(6-13(14)18)12-8-21-15-7-10(17)3-4-11(15)16(12)19/h2-8,17-18H,1H3 Key: ZZAJQOPSWWVMBI-UHFFFAOYAR;
	SMILES O=C\1c3c(O/C=C/1c2ccc(OC)c(O)c2)cc(O)cc3;
Properties
Chemical formula	C16H12O5
Molar mass	284.26 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

Calycosin is a O-methylated isoflavone. It can be isolated from Astragalus membranaceus Bge. var. mongholicus^[1] and Trifolium pratense (red clover).^[2]

Biosynthesis

Isoflavone 3'-hydroxylase uses formononetin, NADPH, H⁺ and O₂ to produce calycosin, NADP⁺ and H₂O.