Resmethrin
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| UN number | 3082 3349 2902 |
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| Template:Longitem | C22H26O3 |
| Molar mass | 338.44 g/mol |
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Resmethrin is a pyrethroid insecticide with many uses, including control of the adult mosquito 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.[1]
References
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- ↑ Pesticide Information Profiles, Extension Toxicology Network (EXTOXNET). Resmethrin
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External links
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- Resmethrin Technical Fact Sheet - National Pesticide Information Center
- Pyrethrins and Pyrethroids Fact Sheet - National Pesticide Information Center
- Resmethrin Pesticide Information Profile - Extension Toxicology Network
- MSDS for Scourge Formula II
- WHO/FAO DATA SHEETS ON PESTICIDES, No. 83, RESMETHRIN World Health Organization & Food and Agriculture Organization Template:Webarchive
- Reregistration Eligibility Decision for Resmethrin (2006) - U.S. Environmental Protection Agency