2757. Cyhalothrin

Nomenclature

CAS number: 68085-85-8
3-(2-Chloro-3,3,3-trifluoro-1-propenyl)-2,2-dimethylcyclopropanecarboxylic acid cyano(3-phenoxyphenyl)methyl ester; Grenade (Zeneca).
C23H19ClF3NO3; mol wt 449.85.
C 61.41%, H 4.26%, Cl 7.88%, F 12.67%, N 3.11%, O 10.67%.

Description and references

Synthetic pyrethroid insecticide. Prepn: R. K. Huff, DE 2802962; idem, US 4183948 (1977, 1980 both to ICI). Activity: P. D. Bently et al., Pestic. Sci. 11, 156 (1980); V. K. Stubbs et al., Aust. Vet. J. 59, 152 (1982). Review of toxicology and human exposure: Toxicological Profile for Pyrethrins and Pyrethroids (PB2004-100004, 2003) 332 pp.

Chemical structure

Properties

Commercial product exists as a mixture consisting of 95% cis-isomers.

Use

Insecticide; acaricide.