2401. Cloquintocet-Mexyl

Nomenclature

CAS number: 99607-70-2
[(5-Chloro-8-quinolinyl)oxy]acetic acid 1-methylhexyl ester; CGA-185072.
C18H22ClNO3; mol wt 335.83.
C 64.38%, H 6.60%, Cl 10.56%, N 4.17%, O 14.29%.

Description and references

Safening agent to protect crops from herbicidal injury. Prepn: A. Hubele, EP 94349; idem, US 4902340 (1983, 1990 both to Ciba-Geigy). Description: J. Amrein et al., Brighton Crop Prot. Conf. - Weeds 1989, 71-76. Effects on herbicide metabolism in cereals: K. Kreuz et al., Z. Naturforsch. 46C, 901 (1991).

Chemical structure

Properties

Odorless crystals, mp 69°. Vapor pressure (20°): 2.5 × 10-6 Pa. Soly in water (20°): 0.8 ppm. Sol in most organic solvents. LD50 in rats (mg/kg): >2000 orally; >2000 dermally. LC50 (4 hr) in rats: >935 mg/m3 by inhalation (Amrein).

Derivative

Mixture with clodinafop-propargyl.

Nomenclature

Célio (Novartis); Horizon (Novartis).

Use

Herbicide safener.