A metabolite of DDT; an agonist at ERα and ERβ (REC20s = 3.2 and 2.4 μM, respectively); inhibits DHT-induced androgen receptor transcription (RIC20 = 0.71 μM); increases apoptosis in isolated human PBMCs at 100 and 150 μg/ml; not considered lethal to hamsters (LD50 = ~5,000 mg/kg) but is to rats (LD50 = 3,750 mg/kg)