Resmethrin is a

pyrethroid A pyrethroid is an organic compound similar to the natural pyrethrins, which are produced by the flowers of pyrethrums ('' Chrysanthemum cinerariaefolium'' and '' C. coccineum''). Pyrethroids are used as commercial and household insecticides. ...

insecticide Insecticides are substances used to kill insects. They include ovicides and larvicides used against insect eggs and larvae, respectively. Insecticides are used in agriculture, medicine, industry and by consumers. Insecticides are claimed t ...

with many uses, including control of the adult

mosquito Mosquitoes (or mosquitos) are members of a group of almost 3,600 species of small flies within the family Culicidae (from the Latin ''culex'' meaning " gnat"). The word "mosquito" (formed by ''mosca'' and diminutive ''-ito'') is Spanish for "li ...

population. The resmethrin molecule has four stereoisomers determined by cis-trans orientation around a carbon triangle and chirality. Technical resmethrin is a mixture of (1R,trans)-, (1R,cis)-, (1S,trans)-, and (1S,cis)- isomers, typically in a ratio of 4:1:4:1. The 1R isomers (both trans and cis) show strong insecticidal activity, while the 1S isomers do not. The (1R,trans)- isomer is also known as bioresmethrin,(+)-trans-resmethrin, or d-trans-resmethrin; although bioresmethrin has been used alone as a pesticide active ingredient, it is not now registered as a separate active ingredient (AI) by the U.S. EPA. The (1R,cis)- isomer is known as cismethrin, but this is also not registered in the U.S. for use alone as a pesticide AI. Commercial trade names for products that contain resmethrin are: Chrysron, Crossfire, Lethalaire V-26, Pynosect, Raid Flying Insect Killer, Scourge, SPB-1382, Sun-Bugger #4, Synthrin, Syntox, Vectrin, and Whitmire PT-110.Pesticide Information Profiles, Extension Toxicology Network (EXTOXNET)
Resmethrin
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References

External links

*
Resmethrin Technical Fact Sheet - National Pesticide Information CenterPyrethrins and Pyrethroids Fact Sheet - National Pesticide Information Center
* ttp://www.afpmb.org/pubs/standardlists/msds/6840-01-359-8533_msds.pdf MSDSfor Scourge' Formula II
WHO/FAO DATA SHEETS ON PESTICIDES,No. 83,RESMETHRIN World Health Organization & Food and Agriculture OrganizationReregistration Eligibility Decision for Resmethrin (2006) - U.S. Environmental Protection Agency
{{insecticides Furans Benzyl compounds Chrysanthemate esters Cyclopropanes