A carbamate insecticide; an inhibitor of acetylcholinesterase; lethal to German cockroaches (LD50s = 2.45, 4.73, and 1.06 μg/insect for newly emerged males, newly emerged females, and 4-week-old nymphs, respectively); induces LDH release from and inhibits the growth of flounder gill cells (IC50s = 86.59 and 89.96 μg/ml, respectively); induces yolk sac and pericardial edema in zebrafish embryos at 100 and 200 μg/ml; inhibits rat blood and brain cholinesterase, decreases ambulation and rearing in an open field test, and increases latency to escape foot shock after an audio stimulus in the two-way active avoidance box in rats at 8.3 mg/kg ,