An active metabolite of α-zearalenol that acts as an ER agonist; inhibits [3H]estradiol binding to estrogen receptors on calf uterus in a dose-dependent manner; increases endometrial thickness, bone mineral density, and serum levels of alkaline phosphatase in ovariectomized rats at a dose of 10 mg/kg per day; decreases sperm count and motility and serum levels of testosterone, FSH, and LH in male mice,