Propaquizafop
Title: Propaquizafop
CAS Registry Number: 111479-05-1
CAS Name: (R)-2-[4-[(6-Chloro-2-quinoxalinyl)oxy]phenoxy]propanoic acid 2-[[(1-methylethylidene)amino]oxy]ethyl ester
Additional Names: 2-isopropylideneaminooxyethyl (R)-2-[4-(6-chloroquinoxalin-2-yloxy)phenoxy]propionate
Manufacturers' Codes: Ro-17-3664
Trademarks: Prilan (IPESA)
Molecular Formula: C22H22ClN3O5
Molecular Weight: 443.88
Percent Composition: C 59.53%, H 5.00%, Cl 7.99%, N 9.47%, O 18.02%
Literature References: Post-emergence graminicide for use in broadleaf crops. Prepn: G. Frater et al., US 4687849 (1987 to Hoffmann-La Roche); R. Klaus et al., ACS Symp. Ser. 443, 226-235 (1991). Comprehensive description: P. F. Bocion et al., Proc. Br. Crop Prot. Conf. - Weeds 1987, 55-62. Review of comparative field trials: J. D. A. Wevers, Meded. Fac. Landbouwwet. Rijksuniv. Gent 56, 611-615 (1991).
Properties: Crystals from ether/hexane, mp 62-64°. [a]D20 +29.7° (c = 0.93% in chloroform). d20 1.29. Vapor pressure (20°): 1.3 ´ 10-8 Pa. Log P (n-octanol/water at pH 7): 3.5. Soly in water (25°): 2 ppm (pH 7). LD50 in rats (mg/kg): >5000 orally; >2000 dermally (Bocion).
Melting point: mp 62-64°
Optical Rotation: [a]D20 +29.7° (c = 0.93% in chloroform)
Log P: Log P (n-octanol/water at pH 7): 3.5
Density: d20 1.29
Toxicity data: LD50 in rats (mg/kg): >5000 orally; >2000 dermally (Bocion)
Use: Herbicide.

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