Method for the control of cattle grubs employing m-phenoxybenzyl and .alpha .
AssigneeAmerican Cyanamid Company
InventorRobert H. Schenkel
Life of this patent
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Abstract
A method for the control of larvae of heel flies which parasitize ruminants and other domestic and farm animals involving topical application of a larvicidally effective amount of a m-phenoxybenzyl or .alpha.-cyano-m-phenoxybenzyl ester of a 2-haloalkyl(oxy-, thio-, sulfinyl-, or sulfonyl)phenyl alkanoic acid.
Claims8
A method for protecting ruminant, domestic, and farm animals from infestation by the larvae of flies of the family Hypodermatidae comprising, applying topically to larvae-infested animals a larvicidally effective amount of a compound having the structural formula:
- ##STR3## wherein RCF.sub.2 X--, Y and Z are all meta or para to the carbon to which the alkanoic acid ester group is attached, and X is O, S, SO or SO.sub.2 ;
- Y and Z is each H, Cl, F, Br, NO.sub.2, CH.sub.3 or OCH.sub.3 ;
- R is H, F, CHF.sub.2 or CF.sub.3 ;
- R.sub.2 is ethyl, n-propyl, isopropyl, isopropenyl or t-butyl;
- R.sub.3 is H, CN or --C.tbd.CH;
- and R.sub.4 is H, F, Cl, CH.sub.3 or OCH.sub.3 or the optical isomers thereof.
A method for protecting ruminant animals from infestation by the larvae of flies of the family Hypodermatidae comprising applying topically to the larvae-infested animals' skin a liquid solution containing from 0.005 to 1.0% by weight of a compound having the structural formula:
- ##STR5## wherein RCF.sub.2 X--, Y and Z are all metal or para to the carbon to which the alkanoic acid ester group is attached, and X is O, S, SO or SO.sub.2 ;
- Y and Z is each H, Cl, F, Br, NO.sub.2, CH.sub.3 or OCH.sub.3 ;
- R is H, F, CHF.sub.2 or CF.sub.3 ;
- R.sub.2 is ethyl, n-propyl, isopropyl, isopropenyl or t-butyl;
- R.sub.3 is H, CN or --C.tbd.CH;
- and R.sub.4 is H, F, Cl, CH.sub.3 or OCH.sub.3 or the optical isomers thereof.
Dependencies are inferred from the claim text.