Definitions of F2 Toxin
( S-( E))- 3, 4, 5, 6, 8, 10- Hexahydro- 14, 16- dihydroxy- 3- methyl- 1H- 2- benzoxacyclotetradecin- 1, 7( 8H)- dione. One of a group of compounds known under the general designation of resorcylic acid lactones. Cis, trans, dextro and levo forms have been isolated from the fungus Gibberella zeae ( formerly Fusarium graminearum). They have estrogenic activity, cause toxicity in livestock as feed contaminant, and have been used as anabolic or estrogen substitutes.