Isoxazoline derivatives for controlling invertebrate pests

摘要

Disclosed herein are isoxazoline compounds of formula (Ia), wherein the variables are as described herein in free form and in salt form, an example being N-(2-((cyanomethyl)amino)-2-oxoethyl)-5-(5-(3,5-dichlorophenyl)-5-(trifluoromethyl)-4,5-dihydroisoxazol-3-yl)-2-methylthiophene-3-carboxamide. Also disclosed are compositions comprising the compounds and the use of the compounds in the control of parasites, in particular ectoparasites, in and on warmblooded animals.