Allethrins

thumb|:en:Skeletal structure|Chemical structure of some pyrethrins: pyrethrin I (R=CH3), pyrethrin II (R=CO2CH3)

Prallethrin is a pyrethroid insecticide and mosquito repellent.

thumb|right|300px|Allethrin I (R = −CH3)Allethrin II (R = −COOCH3) The allethrins are a group of related synthetic compounds used in insecticides. They are classified as pyrethroids, i.e. synthetic versions of pyrethrin, a chemical with insecticidal properties found naturally in Chrysanthemum flowers. They were first synthesized in the United States by Milton S. Schechter in 1949. Allethrin was the first pyrethroid.

Bioallethrin is an ectoparasiticide. It consists of two of the eight stereoisomers of allethrin in any ratio.

chemical compound

chemical compound