Cyfluthrin (Cyfluthrine, [(R)-cyano-[4-fluoro-3-(phenoxy)phenyl]methyl] (1R,3R)-3-(2,2-dichloroethenyl)-2,2-dimethylcyclopropane-1-carboxylate, CAS#68359-37-5) Cyfluthrin is a synthetic pyrethroid derivative that is used as an insecticide in restricted use pesticide and common household pesticide. It is a complex organic compound, and the commercial product is sold as a mixture of isomers. Like most pyrethroids, it is highly toxic to fish, invertebrates, and insects, but it is far less toxic to humans. It is generally supplied as a 10-25% liquid concentrate for commercial use and is diluted prior to spraying onto agricultural crops and outbuildings.

Control of chewing and sucking insects on oilseed rape (cabbage stem flea beetleand rape winter stem weevil), cereals (Caphids vectors of BYDV), ornamentals, maize, cotton, groundnuts, potatoes, rice, lucerne, tobacco, sugar beet, deciduous fruit, and vegetables. Control of insect pests, especially houseflies, mosquitos, and cockroaches in public health, stored products, and domestic usage.