Hangzhou Leaflife Chemical Co., Ltd.

Products

 

CHLORFENAPYR

 

Insecticide, acaricide
pyrazole (acaricide) analogue

CHLORFENAPYR

NOMENCLATURE
Common name chlorfenapyr (BSI, pa ISO, ANSI)
IUPAC name 4-bromo-2-(4-chlorophenyl)-1-ethoxymethyl-5-trifluoromethylpyrrole-3-carbonitrile 
Chemical Abstracts name 4-bromo-2-(4-chlorophenyl)-1-(ethoxymethyl)-5-(trifluoromethyl)-1H-pyrrole-3-carbonitrile 
CAS RN [122453-73-0] 

PHYSICAL CHEMISTRY
Mol. wt. 407.6  M.f. C15H11BrClF3N2O  Form White solid.  M.p. 100-101 ºC  KOW logP = 4.83  Solubility Practically insoluble in water. Soluble in acetone, diethyl ether, dimethyl sulfoxide, tetrahydrofuran, acetonitrile, and alcohols. 

COMMERCIALISATION
History Under development by American Cyanamid Co. (now BASF AG). 

APPLICATIONS
Biochemistry Oxidative removal in vivo of the N-ethoxymethyl group generates the active species, which is a mitochondrial uncoupler.  Mode of action Insecticide and acaricide with mainly stomach and some contact action. Exhibits good translaminar but limited systemic activity in plants.  Uses Control of many species of insects and mites, including those resistant to carbamate, organophosphate and pyrethroid insecticides and also chitin-synthesis inhibitors, in cotton, vegetables, citrus, top fruit, vines and soya beans. Among pests resistant to conventional products which are controlled by chlorfenapyr are Brevipalpus phoenicis (leprosis mite), Leptinotarsa decemlineata (Colorado potato beetle), Helicoverpa spp., Heliothis spp., Plutella xylostella (diamond-back moth) and Tetranychus spp. Its use in resistance management programmes for control of various cotton pests is under evaluation.  Phytotoxicity No phytotoxicity observed at field use rates.  Formulation types EC; SC.  Selected tradenames: 'Pirate' (cotton) (BASF); 'Stalker' (BASF)