An insecticide of nereistoxin series, molecular formula: C5H11NO6S4Na2, soluble in water, stable in acidic and neutral solutions, and easily decomposed in alkaline solutions. 　　The medicine is a competitive inhibitor of acetylcholine, which acts on the ganglion cholinergic synapse, and inhibits the synaptic transmission of the insect central nervous system, thus causing the death of insects. It has strong contact killing, gastric toxicity, fumigation and inner-absorption conducting effects. This product has a good prevention effect on yellow stem borers. The Company registers and produces 29% AS and 18% AS.