Fenpyroximate
Title: Fenpyroximate
CAS Registry Number: 134098-61-6
CAS Name: 4-[[[(E)-[(1,3-Dimethyl-5-phenoxy-1H-pyrazol-4-yl)methylene]amino]oxy]methyl]benzoic acid 1,1-dimethylethyl ester
Additional Names: tert-butyl (E)-a-(1,3-dimethyl-5-phenoxypyrazol-4-ylmethyleneaminooxy)-p-toluate
Manufacturers' Codes: NNI-850; HOE-555-02A
Trademarks: Sequel (Nihon)
Molecular Formula: C24H27N3O4
Molecular Weight: 421.49
Percent Composition: C 68.39%, H 6.46%, N 9.97%, O 15.18%
Literature References: Phenoxypyrazole based acaricide. Chemical, biological properties and field evaluation: T. Konno et al., Proc. Br. Crop Prot. Conf. - Pests Dis. 1990, 71. Mode of action: K. Motoba et al., Pestic. Biochem. Physiol. 43, 37 (1992). Control of spider mites: M. Van de Veire, D. Degheele, Meded. Fac. Landbouwwet. Univ. Gent 57, 925 (1992). Metabolism in rats: H. Nishizawa et al., J. Pestic. Sci. 18, 59 (1993). Soil degradation: Y. Izawa et al., ibid. 67.
Properties: White crystalline powder, mp 101.1-102.4°. Vapor pressure at 25°: 5.6 ´ 10-8 mm Hg. Soly at 20° (g/l): water 0.015 ´ 10-3; at 25°: methanol 15; n-hexane 4; xylene 175. Log P (octanol/water) at 20°: 5.01. LD50 in male, female rats (mg/kg): 480, 245 orally; >2000, >2000 dermally. LC50 (48hr) in carp: 6.1 mg/l; LC50 (3hr) in daphnia pulex: 85 mg/l (Konno).
Melting point: mp 101.1-102.4°
Log P: Log P (octanol/water) at 20°: 5.01
Toxicity data: LD50 in male, female rats (mg/kg): 480, 245 orally; >2000, >2000 dermally; LC50 (48hr) in carp: 6.1 mg/l; LC50 (3hr) in daphnia pulex: 85 mg/l (Konno)
Use: Acaricide.

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