Carbamate pesticide that reversibly inhibits acetylcholinesterase, causing rapid accumulation of acetylcholine at the synaptic cleft. Used as a pesticide and as fast-acting acetylcholinesterase inhibitor for research purposes to study cholinergic neurotransmission in simple systems such as the nematode C. elegans. It is the active ingredient in mixtures used to control insect, mite, and nematode pests in agriculture. Aldicarb has a high acute mammalian toxicity (LD50 = 0.3-0.5 mg/kg) following oral or parenteral administration. Compound can be used as analytical reference material.