Pyrethroid insecticides

[Cypermethrin] CAS[52315-07-8] UN3352
= alpha-Cyano-3-phenoxybenzyl(1RS)cis, trans-3-(2,2-dichlorovinyl)-2,2-dimethyl-cyclopropanecarboxylate
Trade name; Cypermethrin (B): Barricade, Cymbush, Imparator, Kalf Super, NRDC-149(Shell, ICI, FMC), Ripcord
Chemical formula; C22H19Cl2NO3
Purpose for use; Synthetic pyrethroids have been introduced over the past two decades for agricultural and domestic use as replacements for more toxic pesticides, such as chlorinated hydrocarbons, organophosphates and carbamates. Cypermethrin is a type of cyanophenoxybenzyl pyrethroid and is categorized as restricted use pesticide (RUP) by US EPA because of its high toxicity to fish. (ref. ID; 6698)
The recommended doses are 0.02-0.075 kg a.i. ha-1. (ref. ID; 2848, 2851)
Test organisms;
Protozoa: Cyclopyxis kahli (ref. ID; 2848, 2851)
Oligochaeta: Branchiura sowerbyi (ref. ID; 6698)
Oligochaeta: Eisenia foetida (ref. ID; 7012)
Oligochaeta: Perionyx excavatus (ref. ID; 7085)

[Fenvalerate] CAS[51630-58-1] UN2902
= alpha-Cyano-3-phenoxybenzyl-2-(4-chlorophenyl)-3-methylbuturate)
Trade name; Fenvalerate (I): Belmark, Ectrin, Pydrin, Sumicidin
Chemical formula; C25H22ClNO3
Purpose for use; Pyrethroid insecticide.
Test organisms;
Protozoa: Blepharisma undulans (ref. ID; 496)
Protozoa: Colpoda cucullus (ref. ID; 496)
Protozoa: Oikomonas termo (ref. ID; 496)
Oligochaeta: Eisenia foetida (ref. ID; 7012)

[Permethrin]
= 3-Phenoxybenzyl-3-(2,2-dichlorovinyl)-2,2-dimethyl-cyclopropane-carboxylate
= 3-Phenoxybenzyl(1RS)cis, trans-3-(2,2-dichlorovinyl)-2,2-dimethyl-cyclopropanecarboxylate
Trade name; Permethrin (I, B): Adion, Ambush, Ambushfog, Coopex, Ectiban, Kalif, Matadan, NRDC-143, Outflank, Perigen, Perthrine, Pounce, Qamlin, Stockade, Stomoxin P, Talcord
Chemical formula; C21H20Cl2O3
Purpose for use; Pyrethroid insecticide.
Toxicity; LD50 (oral): (R:S = 40:60) rat (male) 430 mg, rat (female) 470 mg
Test organisms;
Protozoa: Tetrahymena pyriformis (ref. ID; 6097)
Oligochaeta: Eisenia foetida (ref. ID; 7012)