Insecticide - Alpha-Cypermethrin

NOMENCLATURE Common name alpha-cypermethrin (BSI, draft E-ISO); alpha-cyperm├ęthrine ((f) draft F-ISO) Chemical Abstracts name [1a(S*),3a]-(?-cyano(3-phenoxyphenyl)methyl 3-(2,2-dichloroethenyl)-2,2-dimethylcyclopropanecarboxylate Other names alfoxylate*; alphamethrin* (rejected common name proposals) CAS RN [67375-30-8] correct stereochemistry; [52315-07-8] (formerly [86752-99-0]

Alpha-cypermethrin is a synthetic pyrethroid insecticide with a range of agricultural uses. It is also used to form a barrier to repel or kill termites.

The synthetic pyrethroids are man-made chemicals similar in structure to the naturally occurring pyrethrums. Like other pyrethroids, alpha-cypermethrin kills insects by affecting the salt balance (sodium channels) in nerve cells. It has a broad spectrum of activity against insects with the main toxic effect on the nervous system.


Control of a wide range of chewing and sucking insects (particularly Lepidoptera, Coleoptera, and Hemiptera) in fruit (including citrus), vegetables, vines, cereals, maize, beet, oilseed rape, potatoes, cotton, rice, soya beans, forestry, and other crops. Control of cockroaches, mosquitoes, flies, and other insect pests in public health; and flies in animal houses. Also used as an animal ectoparasiticide.

Production formulation