Clethodim

Title: Clethodim
CAS Registry Number: 99129-21-2
CAS Name: 2-[1-[[(3-Chloro-2-propenyl)oxy]imino]propyl]-5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclohexen-1-one
Additional Names: (±)-2-[(E)-1-[(E)-3-chloroallyloxyimino]propyl]-5-[2-(ethylthio)propyl]-3-hydroxycyclohex-2-enone
Manufacturers' Codes: RE-45601
Trademarks: Prism (Valent); Select (Valent)
Molecular Formula: C17H26ClNO3S
Molecular Weight: 359.91
Percent Composition: C 56.73%, H 7.28%, Cl 9.85%, N 3.89%, O 13.34%, S 8.91%
Literature References: Systemic graminicide. Prepn: T. Luo, BE 897413; idem, US 4440566 (1983, 1984 both to Chevron). Properties and biological profile: R. T. Kincade et al., Proc. Br. Crop Prot. Conf. - Weeds 1987, 49. Degradation studies: L. N. Falb et al., J. Agric. Food Chem. 38, 875 (1990). Persistence in soil and efficacy against grasses: A. Rahman et al., Proc. 41st N. Z. Weed Pest Control Conf. 1988, 39. Field trial against grasses: J. H. Hunter, Weed Technol. 9, 432 (1995).
Properties: Clear amber liquid. Sol in most organic solvents. LD50 in male, female rats (mg/kg): 1630, 1360 orally; LC50 in trout: 56 mg/l; 8 day feeding in quail: > 6000 ppm (Kincade).
Toxicity data: LD50 in male, female rats (mg/kg): 1630, 1360 orally; LC50 in trout: 56 mg/l; 8 day feeding in quail: > 6000 ppm (Kincade)
Use: Post-emergent herbicide.
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