FIELD: organic chemistry, veterinary science.
SUBSTANCE: invention describes using aminoacetonitrile compounds of the formula (I): 
wherein Ar1 and Ar2 mean independently of one another unsubstituted phenyl or phenyl substituted with halide; Q means -C(R1)(R2) wherein R1 and R2 or independently of one another mean hydrogen atom, or in common with carbon atom to which they are bound form (C2-C6)-alkylene; d = 1; R3 means hydrogen atom, (C1-C6)-alkyl or (C2-C6)-alkynyl; each among R4, R5, R6, R7 and R8 means independently of one another hydrogen atom, (C1-C6)-alkyl or (C3-C6)-cycloalkyl; or R4 and R5 mean in common (C2-C6)-alkylene; W means oxygen atom; a and b mean independently of one another 0 or 1, and optionally of their enantiomers in control of endoparasitic pests in warm-blooded productive cattle and domestic animals. Also, the invention describes the composition and a method for control of endoparasitic pests. Above said compounds are used for control of endoparasites, especially, helminthes in warm-blooded productive cattle and in domestic animals.
EFFECT: valuable properties of compounds.
6 cl, 3 tbl, 5 ex
