Quizalofop-P-ethyl

TC&FORMULATION: 95%TC, 5%EC, 10%EC

Structure Formula:

NOMENCLATURE

quizalofop-P-ethyl

Common name quizalofop-P-ethyl (BSI, draft E-ISO)

IUPAC name ethyl (R)-2-[4-(6-chloroquinoxalin-2-yloxy)phenoxy]propionate 

CAS RN [100646-51-3] 

PHYSICAL CHEMISTRY

quizalofop-P-ethyl

Mol. wt. 372.8  M.f. C19H17ClN2O4  Form White, crystalline, odourless solid.  M.p. 76.1-77.1 ºC  B.p. 220 ºC/26.6 Pa  V.p. 1.1 ´ 10-4 mPa (20 ºC)  KOW logP = 4.61 (23? ºC)  Henry 6.7 ´ 10-5 Pa m3 mol-1 (calc.)  S.g./density 1.36 g/cm3  Solubility In water 0.61 mg/l (20 ºC). In acetone, ethyl acetate and xylene >250, 1,2-dichloroethane >1000 (all in g/l, 22-23 °C); in methanol 34.87, n-heptane 7.168 (both in g/l, 20 °C).  Stability Stable in neutral and acidic media, but unstable in alkaline media; DT50 <1 d (pH 9). Stable at high temperatures and in organic solvents.  Specific rotation [a]D20 +35.9?(20 ºC)   

APPLICATIONS

Biochemistry Fatty acid synthesis inhibitor (inhibition of acetyl CoA carboxylase)  Mode of action Systemic herbicide, absorbed from the leaf surface, with translocation throughout the plant, moving in both the xylem and phloem, and accumulating in the meristematic tissue. 

quizalofop-P-ethyl

Uses Selective post-emergence control of annual and perennial grass weeds in potatoes, soya beans, sugar beet, peanuts, oilseed rape, sunflowers, vegetables, cotton, and flax. Phytotoxicity Most non-graminaceous crops are tolerant.  Formulation types EC; SC.  Compatibility Can be used in combination with post-emergence broad-leaved herbicides.  

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