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.
Flurprimidol Flurtamone Flusilazole Fluspirilene Flutamide

Fluroxypyr
Fluroxypyr.svg
Identifiers
CAS number 69377-81-7, 81406-37-3 (1-Methylheptyl ester)
PubChem 50465
ChemSpider 45757
Jmol-3D images Image 1
Properties
Molecular formula C7H5Cl2FN2O3
Molar mass 255.03 g mol−1
Appearance White solid[1]
Density 1,09 g/cm³ (20 °C)[1]
Melting point 232 to 233 °C; 450 to 451 °F; 505 to 506 K ([1])
Solubility in water 91 mg/L (20 °C)[1]
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Infobox references

Fluroxypyr is an herbicide in the class of synthetic auxins. It is used to control broadleaf weeds and woody brush.[2] It is formulated as the 1-methylheptyl ester (fluroxypyr-MHE).[3]