Ethyl 3-(2,3,4-trichlorophenyl)-2-(trifluoromethyl)isonicotinate
Ethyl 2-(3,4,5-trichlorophenyl)-6-(trifluoromethyl)isonicotinate
Ethyl 2-(3,4,5-trichlorophenyl)-5-(trifluoromethyl)isonicotinate
Ethyl 2-(3,4,5-trichlorophenyl)-3-(trifluoromethyl)isonicotinate