Nervous system acaricides

Pyrethrinoids are powerful natural insecticides that act on the nervous system of insects. They are esters of chrysantemic acid with a substituted cyclopentenol. The replacement of this motif by a more photochemically stable group affords products that are utilizable in agrochemistry. These compounds exhibit a high insecticide activity and are nontoxic for mammals consequently, they are established in very important markets (e.g., deltamethrin, permethriri). Some fluorinated pyrethrinoids have been synthesized and marketed. One goal of these compounds is to enhance the acaricide activity. Some examples are given in Figure 4.46. 

This chemical is used for the control of cone worms, seed bugs, seed worms, and other insects and mites. The USEPA has classified bifenthrin as toxicity class II, meaning it is moderately toxic.4,5 Bifenthrin is a member of the pyrethroid chemical class. It is an insecticide and acaricide that affects the central nervous system (CNS) and causes paralysis in insects.6,7 It is highly toxic to fish and aquatic organisms. 

Inhalation, ingestion, dermal Nervous system disruption, mainly of the brain Headache, dizziness, shaking, disorientation, weakness, nervousness Insecticides and acaricides Lindane, chlordane, dieldrin, mirex, DDT, toxaphene, chlordecone, endosulfan... 

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