Structural Formula Vector Image
Title: Tebufenpyrad
CAS Registry Number: 119168-77-3
CAS Name: 4-Chloro-N-[[4-(1,1-dimethylethyl)phenyl]methyl]-3-ethyl-1-methyl-1H-pyrazole-5-carboxamide
Additional Names: N-(4-t-butylbenzyl)-4-chloro-3-ethyl-1-methylpyrazole-5-carboxamide
Manufacturers' Codes: MK-239
Trademarks: Pyranica (Mitsubishi Kasei)
Molecular Formula: C18H24ClN3O
Molecular Weight: 333.86
Percent Composition: C 64.76%, H 7.25%, Cl 10.62%, N 12.59%, O 4.79%
Literature References: Used to control plant-feeding mites on cotton, citrus, fruits, vegetables, and ornamentals; inhibits electron transport during mitochondrial respiration. Prepn: I. Okada et al., EP 289879; eidem, US 4950668 (1988, 1990 both to Mitsubishi Kasei). GC/MS determn in water, soil, and urine samples: A. Navalón et al., Chromatographia 54, 377 (2001). Field trial vs mites in apple orchards: W. G. Thwaite et al., Exp. Appl. Acarol. 20, 177 (1996); in honey bee colonies: M. A. Ali et al., J. Econ. Entomol. 96, 259 (2003). Mite toxicity study: Y.-J. Kim et al., ibid. 92, 187 (1999). Review: K. Inoue, T. Fukuchi, Agrochem. Jpn. 64, 12-14 (1994).
Properties: Off-white solid, slight aromatic odor, mp 61-62°. Vapor pressure (25°): 1.0´10-5 Pa. LD50 in male, female rats (mg/kg): 595, 997 orally; >2000, >2000 dermally. LC50 in male rats (mg/m3): 2660 by inhalation (Inoue, Fukuchi).
Melting point: mp 61-62°
Toxicity data: LD50 in male, female rats (mg/kg): 595, 997 orally; >2000, >2000 dermally; LC50 in male rats (mg/m3): 2660 by inhalation (Inoue, Fukuchi)
Use: Acaricide.

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