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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



synthetic esters of chrysanthemumic acid; analogs of pyrethrins.

Pyrethroids are obtained either by the reaction of chrysanthemumyl chloride with an alcoholic moiety in the presence of a tertiary amine or by transesterification of the ethyl ester of chrysanthemumic acid in the presence of sodium. The pyrethroids that are most toxic to insects are esters of cyclopentenolones, of substituted benzyl alcohols, and of N-hydroxymethylimides.

Pyrethroids produced today include allethrin (2-allyl-3-meth-yl-2-cyclopenten-4-oI-l-onyl chrysanthemumate), furethrin (2-furfury 1 -3-methyl -2- cyclopenten - 4 -ol -1 - ony 1 chrysanthemum-ate), cyclethrin (2-cyclopentenyl-3-methyl-2-cyclopenten-4-ol-1 -onyl chrysanthemumate), barthrin (6-chloropiperonyl chrysanthemumate), dimethrin (2,4-dimethylbenzyl chrysanthemumate), and tetrametrine [N-(3,4,5,6-tetrahydrophthalimido)-methyl chrysanthemumate]. These compounds, usually in the form of aerosols, are used against household insects.


Mel’nikov, N. N., and K. D. Shvetsova-Shilovskaia. “Sintez insektitsidov piretrinovogo riada.” Khimicheskaia promyshlennost’, 1955, no. 3, pp. 50–61.
Volkov, Iu. P., and N. F. Shugal. “Sinteticheskie analogi piretrinov. Khimicheskaia promyshlennost’, 1969, no. 9, pp. 14–19.
Chemie der Pflanzenschutz- und Schädlingsbekä mpfungsmittel, vol. 1. Edited by R. Wegler. Berlin, 1970. Pages 87–102.


The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
This strategy may also be beneficial for sustainable usage of pyrethroids that constitute prevalent active ingredient of currently used insecticide sprays or aerosols due to deregistration of many insecticide classes.
In combination, the ingredients on the nets kill more mosquitoes and reduce the number of infective bites than conventional nets treated only with a pyrethroid.
As the method stands now, it can be used to detect pyrethroids in foods beyond fruits and vegetables, such as nuts and oils.
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Up to now, the detection of these 7 pyrethroids in tea brew is rarely reported [6, 7].
To the Editor: Permethrin is a great handmade of chemical agents, pyrethroid Type I, which exists in two main isomers, Cis and Trans.[1] Its application in farming and building is due to well availability and repelling of pests.
This left pyrethroids as the primary weapon for subterranean termite management.
Similar observations were made in Uganda, where DDT and pyrethroids were used for indoor residual spraying in the presence of resistance; as soon as carbamates were deployed, the malaria parasite slide positivity rate declined substantially (11).
Runoff of pyrethroids, widely used household insecticides, has led to contamination of urban waterways as well as a need to accurately assess pyrethroid concentrations in waterways.
Maybe, IRS has some utility in areas with low resistance as part of an overall resistance management strategy aimed at preserving the effectiveness of pyrethroids (16).
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