Systematic IUPAC name
(S)-cyano (3-phenoxyphenyl) methyl-(S)-4-chloro-alpha-(1-methylethyl) benzeneacetate
Other names

(S)-cyano-(3-phenoxy phenyl)-methyl-(S)-4-chloro-α-(1-methyl ethyl) benzene acetate
Chloro-α-(1-methylethyl)benzeneacetic acid
cyano(3-phenoxyphenyl)methyl ester (CAS)
(S-(R,R))-4-chloro-α-(1-methylethyl) benzeneacetic acid
(S)-α-cyano-3-phenoxy benzyl (S)-2-(4-chloro-phenyl) isovalerate
Fenvalerate A-Alpha
(S-(R*,R*))-Benzeneacetic acid, 4-chloro-α-(1-methylethyl)-cyano(3-phenoxyphenyl)methylester
Cyano-3-phenoxybenzyl (S)-2-(4-chlorophenyl)isovalerate

Cyano-3-phenoxybenzyl (S)-2-(4-chlorophenyl)-3-methylbutyrate[1]
66230-04-4 YesY
ChemSpider 8517510
ECHA InfoCard 100.118.804
Molar mass 419.91 g·mol−1
Density 1.211 g/cm3
Vapor pressure 0 mmHg at 25 °C
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Esfenvalerate is a synthetic pyrethroid insecticide marketed under the brand Asana.[2] It is the (S)-enantiomer of fenvalerate.[3]

In the United States, a limit of .05 ppm of the chemical's residue is permissible in food.[4]


  1. Kelly, Kevin. "Environmental Fate of Esfenvalerate" (PDF). California Environmental Protection Agency. Retrieved January 10, 2013.
  2. Fishel, Frederick M. (2012). "Pesticide Toxicity Profile: Synthetic Pyrethroid Pesticides". University of Florida. Retrieved January 10, 2013.
  3. "Esfenvalerate". EXTONET (Extension Toxicology Network). Cooperative Extension Offices of Cornell University, Michigan State University, Oregon State University, and University of California at Davis. May 1994. Retrieved January 10, 2013.
  4. The Code of Federal Regulations of the United States of America. U.S. Government Printing Office. 2006. pp. 445–446.

This article is issued from Wikipedia - version of the 10/30/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.