Resmethrin

Resmethrin
Names
IUPAC name
5-benzyl-3-[({[(3R)-2,2-dimethyl-3-(2-methylprop-1-en-1-yl) cyclopropyl]carbonyl}oxy)methyl]furan; (5-Benzyl-3-furyl)methyl-2,2-dimethyl-3-(2-methyl-1-propen-1-yl)cyclopropancarboxylat; 5-benzyl-3-furylmethyl (1RS,3RS;1RS,3SR)-2,2-dimethyl-3-(2-methylprop-1-enyl)cyclopropanecarboxylate; 5-benzyl-3-furylmethyl(1RS)-cis-trans-2,2-dimethyl-3-(2-methylprop-1-enyl)cyclopropanecarboxylate; 5-benzyl-3-furylmethyl(±)-cis-trans-chrysanthemate
Other names
[5-(phenylmethyl)-3-furanyl]methyl 2,2-dimethyl-3-(2-methyl-1-propen-1-yl)cyclopropanecarboxylate
Identifiers
10453-86-8 YesY
28434-01-7 (Bioresmethrin)
3D model (Jmol) Interactive image
ChEMBL ChEMBL2106605
ChemSpider 19952179 YesY
ECHA InfoCard 100.030.842
KEGG C10991 YesY
UNII Z6PN6KTG4K YesY
Properties
C22H26O3
Molar mass 338.44 g/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

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)-, (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, Pynosect, Raid Flying Insect Killer, Scourge, Sun-Bugger #4, SPB-1382, Synthrin, Syntox, Vectrin and Whitmire PT-110.[1]

References

  1. Pesticide Information Profiles, Extension Toxicology Network (EXTOXNET). Resmethrin
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