7408. Picoxystrobin

Nomenclature

CAS number: 117428-22-5
(αE)-α-(Methoxymethylene)-2-[[[6-(trifluoromethyl)-2-pyridinyl]oxy]methyl]benzeneacetic acid methyl ester; methyl (E)-2-[2-[6-(trifluoromethyl)pyridin-2-yloxymethyl]phenyl]-3-methoxyacrylate; ZA-1963; Acanto (Syngenta).
C18H16F3NO4; mol wt 367.32.
C 58.86%, H 4.39%, F 15.52%, N 3.81%, O 17.42%.

Description and references

Strobilurin fungicide for use in cereal crops. Prepn: J. M. Clough et al., EP 278595; eidem, US 5021581 (1988, 1991 both to ICI). Comprehensive description: J. R. Godwin et al., Brighton Crop Prot. Conf. - Pests Dis. 2000, 533-540; M. Hiemer et al., Gesunde Pflanz. 53, 191-195 (2001).

Chemical structure

Properties

Solid, mp 75°. d20 1.4. Vapor pressure at 20°: 5.5 × 10-9 kPa. Log P (n-octanol/water) at 20°: 3.6. Soly in water (20°): 3.1 mg/l. MLD in rats (mg/kg): >5000 orally; >2000 dermally; MLC in rats (mg/l): 2.12 by inhalation (Godwin).

Use

Agricultural fungicide.