Fagopyrin

Fagopyrin is a term used for several closely related naturally occurring substances in the buckwheat plant.^[1] Their chemical structure contains a naphthodianthrone skeleton similar to that of hypericin.^[2]

Fagopyrin

Names
IUPAC name 1,3,4,6,8,13-Hexahydroxy-10,11-dimethyl-2,5-di(piperidin-2-yl)fenantro[1,10,9,8-opqra]peryleen-7,14-dion
Identifiers
CAS Number	72393-03-4 N[EPA]
3D model (JSmol)	Interactive image
ChemSpider	4589856
PubChem CID	5488537
CompTox Dashboard (EPA)	DTXSID40993184
InChI InChI=1S/C40H34N2O8/c1-13-11-17(43)23-25-19(13)20-14(2)12-18(44)24-26(20)28-27(25)29-31(35(45)21(15-7-3-5-9-41-15)37(47)33(29)39(23)49)32-30(28)34(40(24)50)38(48)22(36(32)46)16-8-4-6-10-42-16/h11-12,15-16,41-48H,3-10H2,1-2H3 Key: ROFJUMITFMRBRF-UHFFFAOYSA-N
SMILES O=C1C2=C(C3=C(O)C(C4CCCCN4)=C2O)C(C5=C6C(C)=CC(O)=C15)=C7C(C3=C(O)C(C8NCCCC8)=C9O)=C9C(C%10=C7C6=C(C)C=C%10O)=O
Properties
Chemical formula	C40H34N2O8
Molar mass	670.718 g·mol−1
Appearance	Red pigment
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

Fagopyrin is located almost exclusively in the cotyledons of the buckwheat herb. When ingested, fagopyrins cause sensitivity to light.^[3]