Fludioxonil

Title: Fludioxonil
CAS Registry Number: 131341-86-1
CAS Name: 4-(2,2-Difluoro-1,3-benzodioxol-4-yl)-1H-pyrrole-3-carbonitrile
Additional Names: 3-(2,2-difluorobenzodioxol-4-yl)-4-cyanopyrrole
Manufacturers' Codes: CGA-173506
Trademarks: Celest (Syngenta); Maxim (Syngenta); Medallion (Syngenta)
Molecular Formula: C12H6F2N2O2
Molecular Weight: 248.19
Percent Composition: C 58.07%, H 2.44%, F 15.31%, N 11.29%, O 12.89%
Literature References: Nonsystemic phenylpyrrole fungicide structurally related to pyrrolnitrin, q.v. Prepn: R. Nyfeler, J. Ehrenfreund, EP 206999; eidem, US 4705800 (1986, 1987 both to Ciba-Geigy). Comprehensive description: K. Gehmann et al., Brighton Crop Prot. Conf. - Pests Dis. 1990, 399-406. Review of field trials as seed treatment: E. Koch, A. J. Leadbeater, ibid. 1992, 1137-1146.
Properties: Colorless, odorless crystals, mp 199.4°. Soly in water (20°): 1.53 ppm. log P (n-octanol/water): 2.6. LD50 in rats (mg/kg): >2000 orally; >2000 dermally; LC50 (4 hr) in rats: >2600 mg/m3 (Gehmann).
Melting point: mp 199.4°
Log P: log P (n-octanol/water): 2.6
Toxicity data: LD50 in rats (mg/kg): >2000 orally; >2000 dermally; LC50 (4 hr) in rats: >2600 mg/m3 (Gehmann)
Use: Agricultural fungicide.
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