Patent ID: 9655884
Date: 2017-05-23
CPC Classifications: A01N,A61K,A61P,C07D

Claim:
1. A Method of preventing re-infestation of animals by fleas comprising administering to an flea infested animal a sub-insecticidal dose of an isoxazoline compound of formula (I) wherein R n=integer from 0 to 3 R T=5- or 6-membered ring, which is optionally substituted by one or more radicals Y, Y=methyl, halomethyl, halogen, CN, NO Q=X—NR X=CH R wherein Z R Or R sufficient to inhibit the development of the offspring of such fleas into adult stages and to reach blood plasma concentrations between 1.5 and 25 ng/ml, wherein the administration is topical administration or parenteral administration.