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 N=
ChEBI	CHEBI:17793 Y
ChEMBL	ChEMBL241608 Y
ChemSpider	4444104 Y
Jmol 3D model	Interactive image
PubChem	5280448
UNII	09N3E8P7TA Y
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 Y Key: ZZAJQOPSWWVMBI-UHFFFAOYSA-N Y 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).
N verify (what is YN ?)
Infobox references

Calycosin is an O-methylated isoflavone. It can be isolated from Astragalus membranaceus Bge. var. mongholicus and Trifolium pratense L. (red clover).

Biosynthesis

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