compound, formulations to control harmful organisms, ectoparasites and endorapasites or to expel endoparasites, and insecticide or acaricide formulation

摘要

A compound represented by formula (I) or a salt thereof is provided. [formula 1]. in formula (i), R 1 represents an unsubstituted or substituted C 1-6 alkylthio group or the like. al represents a nitrogen atom or ch. a2 represents a nitrogen atom or cr2. R 2 and R 3 each independently represent a hydrogen atom, an unsubstituted or substituted C 6-10 aryl group, an unsubstituted or substituted 3 to 6 membered heterocyclic group, or the like. b1 and b2 each independently represent a nitrogen atom or cr5. however, bl and b2 cannot both be cr5. R5 represents a hydrogen atom, an unsubstituted or substituted C1-6 alkyl group, or the like. R4 represents an unsubstituted or substituted C1-6 alkyl group or the like. R4 is attached to any nitrogen atom among the nitrogen atoms that make up an imidazole ring or a triazole ring. ar represents an unsubstituted or substituted aryl group C6-10 or the like.