Structural Formula Vector Image
Title: Pymetrozine
CAS Registry Number: 123312-89-0
CAS Name: (E)-4,5-Dihydro-6-methyl-4-[(3-pyridinylmethylene)amino]-1,2,4-triazin-3(2H)-one
Manufacturers' Codes: CGA-215944
Trademarks: Plenum (Syngenta); Fulfill (Syngenta)
Molecular Formula: C10H11N5O
Molecular Weight: 217.23
Percent Composition: C 55.29%, H 5.10%, N 32.24%, O 7.37%
Literature References: Pyridine azomethine antifeedant. Prepn: H. Kristinsson, EP 314615; idem, US 4931439 (1989, 1990 both to Ciba-Geigy). Comprehensive description: C. R. Flückiger et al., Brighton Crop Prot. Conf. - Pests Dis. 1992, 43-50. Field trials against aphids and white flies: idem et al., ibid. 1187. Historical account of discovery, synthesis, and development: H. Kristinsson, Spec. Publ. - R. Soc. Chem. 147, 85-102 (1994).
Properties: Crystalline, mp 234.4°. Vapor pressure at 20°: _< 9.7 ´ 10-8 Pa. Soly at 20° (g/l): water 0.270; ethanol 2.25; hexane <0.001. Partition coefficient (n-octanol/water): 0.2. LD50 orally in rats: 5820 mg/kg (Flückiger).
Melting point: mp 234.4°
Log P: Partition coefficient (n-octanol/water): 0.2
Toxicity data: LD50 orally in rats: 5820 mg/kg (Flückiger)
Use: Insecticide.

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