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NOMENCLATURE Lufenuron
Common name lufenuron (BSI, pa E-ISO, INN)
IUPAC name
(RS)-1-[2,5-dichloro-4-(1,1,2,3,3,3-hexafluoropropoxy)phenyl]-3-(2,6-difluorobenzoyl)urea
Chemical Abstracts name
N-[[[2,5-dichloro-4-(1,1,2,3,3,3-hexafluoropropoxy)phenyl]amino]carbonyl]-2,6-difluorobenzamide
CAS RN [103055-07-8] Development codes CGA 184699 (Ciba-Geigy)
PHYSICAL CHEMISTRY Lufenuron
Composition Tech. is ³98%. Mol. wt. 511.2 M.f. C17H8Cl2F8N2O3 Form Colourless
crystals. M.p. 168.7-169.4 ÂC (OECD 102) V.p. <4  10-3 mPa (25 ºC) (OECD 104) KOW
logP = 5.12 (25 ºC) (OECD 117) Henry <3.41  10-2 Pa m3 mol-1 (calc.) S.g./density
1.66 at 20 ºC (OECD 109) Solubility In water <0.06 mg/l (25 ºC). In ethanol 41,
acetone 460, toluene 72, n-hexane 0.13, n-octanol 8.9 (all in g/l, 25 ºC). Stability
Stable in air and light. In water, DT50 32 d (pH 9), 70 d (pH 7), 160 d (pH 5). pKa >8.0
APPLICATIONS Lufenuron
Biochemistry Inhibits chitin synthesis. Mode of action Acts mostly by ingestion; larvae
are unable to moult, and also cease feeding. Uses Insect growth regulator for control of
Lepidoptera and Coleoptera larvae on cotton, maize and vegetables; and citrus whitefly
and rust mites on citrus fruit, at 10-50 g/ha. Also for the prevention and control of
flea infestations on pets. Formulation types EC. Compatibility Not compatible with
pesticides with alkaline reaction (lime sulfur, copper). Selected tradenames: 'Match'
(Syngenta)
MAMMALIAN TOXICOLOGY Lufenuron
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