Hangzhou Leaflife Chemical Co., Ltd.

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TEBUFENPYRAD

 

Acaricide: pyrazole (acaricide)

TEBUFENPYRAD

NOMENCLATURE
Common name
tebufenpyrad (BSI, draft ISO)
IUPAC name N-(4-tert-butylbenzyl)-4-chloro-3-ethyl-1-methylpyrazole-5-carboxamide 
Chemical Abstracts name 4-chloro-N[[4-(1,1-dimethylethyl)phenyl]methyl]-3-ethyl-1-methyl-1H-pyrazole-5-carboxamide 
CAS RN [119168-77-3]  Development codes AC 801757 (Cyanamid); MK-239 (Mitsubishi Kasei)

PHYSICAL CHEMISTRY
Mol. wt. 333.9  M.f. C18H24ClN3O  Form Colourless crystals.  M.p. 61-62 ºC  V.p. <1 ´ 10-2 mPa (25 ºC)  KOW logP = 5.04 (25 ºC)  Henry <1.25 ´ 10-3 Pa m3 mol-1 (calc.)  S.g./density 1.0214  Solubility In water 2.8 mg/l (25 ºC). Soluble in acetone, methanol, chloroform, acetonitrile, hexane, and benzene.  Stability Stable to hydrolysis, DT50 >28 d (pH 5, 7 and 9).

APPLICATIONS
Biochemistry Mitochondrial respiration inhibitor. Acts as an inhibitor of the electron transport chain at Site I. Does not act as a specific muscle or nerve poison.  Mode of action Non-systemic acaricide active by contact and ingestion. Exhibits translaminar movement following application to leaves, and thus inhibits the development of mite eggs oviposited on the undersides of leaves.  Uses Control of all stages of Tetranychus, Panonychus, Oligonychus, and Eotetranychus spp. on top fruit, vines, citrus, vegetables, hops, ornamentals, melons, and cotton. Applied at 50-200 g/ha.  Formulation types EC; EW; WG; WP.