irigenin

from The Century Dictionary.

• noun A colorless compound, C₁₈H₁₆O₈, formed by the action of acids on iridin. It crystallizes in rhorabohedra and melts at 186° C.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun biochemistry An O-methylated isoflavone, the 7-glucoside of irigenin, that can be isolated from the rhizomes of the leopard lily (Belamcanda chinensis).