Combination of fluazuron and invermectin for parasite control

A - Human Necessities – 01 – N

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A01N 43/90 (2006.01) A01N 47/34 (2006.01)

Patent

CA 2390724

An active ingredient combination for the simultaneous control of ecto- and endoparasites, especially mites, ticks and nematodes, on productive livestock, domestic animals and pets, is described, which comprises the active ingredients (1) 1-[4-chloro-3-(3-chloro-5-trifluoromethyl-2-pyridyloxy)phenyl]- 3-(2,6-difluorobenzoyl)urea and (2) a compound of formula (i) wherein R1 is hydrogen or one of radicals (ii) or (iii), R2 is CH(CH3)-CH3, -CH(CH3)-C2H5, - C(CH3)=CH-CH(CH3)2 or cyclohexyl; R3 is hydrogen or hydroxy if the bond between atoms 22 and 23 represents a double bond, or is hydrogen or the group =N-O-CH3 if a single bond is present between atoms 22 and 23; and R4 is HO- or HO-N=, in free form or in the form of a physiologically acceptable salt.

La présente invention concerne une combinaison de principes actifs s'utilisant pour combattre les ectoparasites et endoparasites, particulièrement les mites, les tiques et les nématodes, chez les bestiaux productifs et les animaux domestiques, contenant les principes actifs suivants : (1) 1-[4-chloro-3-(3-chloro-5-trifluorométhyl-2-pyridyloxy)phényl]-3-(2,6difluorobenzoyl)urée et (2) un composé de formule (i), dans laquelle R¿1? représente hydrogène ou un des radicaux décrits (ii) ou (iii); R¿2? représente CH(CH¿3?)-CH¿3?-, -CH(CH¿3?)-C¿2?H¿5?, -C(CH¿3?)=CH-CH(CH¿3?)-¿2? ou cyclohexyle ; R¿3? représente un hydrogène ou un hydroxyle si la liaison entre les atomes 22 et 23 est une liaison double, ou représente un hydrogène ou le groupe =N-O-CH¿3? si la liaison entre les atomes 22 et 23 est une liaison simple; et R¿4? représente HO- ou HO-N=, sous forme libre ou sous forme de sel acceptable sur le plan physiologique.

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