Fluroxypyr
Title: Fluroxypyr
CAS Registry Number: 69377-81-7
CAS Name: [(4-Amino-3,5-dichloro-6-fluoro-2-pyridinyl)oxy]acetic acid
Molecular Formula: C7H5Cl2FN2O3
Molecular Weight: 255.03
Percent Composition: C 32.97%, H 1.98%, Cl 27.80%, F 7.45%, N 10.98%, O 18.82%
Literature References: Auxin-type herbicide for use in cereals. Prepn: S. D. McGregor, US 3761486 (1973 to Dow). Description: J. A. Paul et al., Proc. Br. Crop Prot. Conf. - Weeds 1985, 939. Field trials in grassland: A. R. Thompson, ibid. 1987, 735. Mode of action: G. E. Sanders, K. E. Pallet, Ann. Appl. Biol. 111, 385 (1987). HPLC determn: R. G. Lehmann, J. R. Miller, J. Chromatogr. 485, 581 (1989). Persistence in soil: L. F. Bergström et al., Pestic. Sci. 29, 405 (1990). Uptake and metabolism in weeds: R. L. MacDonald et al., Weed Res. 34, 333 (1994).
Properties: White crystalline solid, mp 232-233°. Vapor pressure (25°): 9.42 ´ 10-7 mm Hg. Soly at 20° (g/l): water 0.091; acetone 41.6. LD50 orally in rats: 2405 mg/kg; i.p. in male, female rats: 458, 519 mg/kg; percutaneous in rabbits >5000 mg/kg (Paul).
Melting point: mp 232-233°
Toxicity data: LD50 orally in rats: 2405 mg/kg; i.p. in male, female rats: 458, 519 mg/kg; percutaneous in rabbits >5000 mg/kg (Paul)
 
Derivative Type: 1-Methylheptyl ester
CAS Registry Number: 81406-37-3
Additional Names: Fluroxypyr-meptyl
Manufacturers' Codes: Dowco 433
Trademarks: Spotlight (Dow AgroSci.); Starane (Dow AgroSci.); Vista (Dow AgroSci.); WideMatch S (Dow AgroSci.)
Molecular Formula: C15H21Cl2FN2O3
Molecular Weight: 367.24
Percent Composition: C 49.06%, H 5.76%, Cl 19.31%, F 5.17%, N 7.63%, O 13.07%
 
Use: Herbicide.

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