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 (klôr-pîr′ə-fŏs′, -pī′rə-)
A toxic organophosphate compound, C9H11Cl3NO3PS, widely used as an insecticide in agriculture and on golf courses and wood products.

[chlor(o)- + pyri(dine) + alteration of phos(phate).]
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Noun1.chlorpyrifos - a common organophosphate insecticide
organophosphate - an insecticide that interferes with an insect's nervous system
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The organophosphate insecticide chlorpyrifos-methyl (Figure 2C) caused microtubule disruption (0.
Enzyme activity in strains of the saw toothed grain beetle (Coleoptera: Cucujidae) differentially resistant to fenitrothion, malathion and chlorpyrifos-methyl.
pesticide MRL (a) ([micro]g/kg) Quintozene 50 Diazinon 50 Chlorpyrifos-Methyl 50 Chlorpyrifos 100 Endosulfan 500 Penconazole 50 Oxadiazon 50 Captan 50 Edifenphos 50 Propiconazole 50 Fipronil 50 Bifenthrin 50 Bromopropylate 1000 Iprodione 50 Phosalone 50 Permethrin 1000 Cypermethrin 50 Fenvalerate 50 Deltamethrin 50 Indoxacarb 500 (a): Maximum Residue Limit Table 2: Pesticide retention time and internal standard per min.
Resistance to Chlorpyrifos-methyl primiphos-methyl, and malathion in Brazilian and U.
The following insecticides were not applied in Monterey or Alameda County in 2006: Chlorpyrifos-methyl, dichlorvos, dicrotophos, fenitrothion, fenthion, isazophos-methyl, pirimiphos-methyl, temephos, tetrachlorvinphos, trichlorfon, chlorethoxyphos, coumaphos, ethion, parathion, sulfotepp, and terbufos.
2007) and Gul (2005) when chlorpyrifos-ethyl and chlorpyrifos-methyl were exposed to Clarias gariepinus and Oreochromis niloticus larvae respectively.
Degradation and biological efficacy of chlorpyrifos-methyl on wheat stored at five temperatures and three moisture contents.
Important among these are Malathion, Sundaphos, pirimiphos methyl (Actellic), chlorpyrifos-methyl (Reldan) and coumaphos (acaricide).