9109. Teflubenzuron

Nomenclature

CAS number: 83121-18-0
N-[[(3,5-Dichloro-2,4-difluorophenyl)amino]carbonyl]-2,6-difluorobenzamide; 1-(3,5-dichloro-2,4-difluorophenyl)-3-(2,6-difluorobenzoyl)urea; CME-134; Nomolt (BASF).
C14H6Cl2F4N2O2; mol wt 381.11.
C 44.12%, H 1.59%, Cl 18.61%, F 19.94%, N 7.35%, O 8.40%.

Description and references

Insect growth regulator; inhibits chitin biosynthesis and moulting. Prepn: H.-M. Becher et al., EP 52833; eidem, US 4457943 (1982, 1984 both to Celamerck). Physical properties and bioactivity: eidem et al., Proc. 10th Int. Congr. Plant Prot. 1, 408 (1983). Field trials in soybeans: D. A. Herbert, J. D. Harper, J. Econ. Entomol. 78, 333 (1985). Efficacy vs fire ants (Solenopsis invicta Buren): D. F. Williams et al., Fla. Entomol. 80, 84 (1997).

Chemical structure

Properties

mp 221-224°. Vapor pressure (20°): 8 × 10-12 mbar. Soly at 20-23° (g/100 ml): hexane 0.005; toluene 0.085; ethanol 0.14; acetone 1.0; DMSO 6.6. Soly in water (20-23°): 20 ppb. LD50 orally in rats: >5000 mg/kg (Becher).

Use

use: Insecticide.