3-Chloro-4-(difluoromethoxy)-5-(perfluorophenyl)pyridine
3-Chloro-2-(difluoromethoxy)-5-(perfluorophenyl)pyridine
2,4-Bis(2,4,5-trichlorophenyl)-3-(difluoromethoxy)-6-(trifluoromethyl)pyridine
3,5-Bis(2,4,5-trichlorophenyl)-4-(difluoromethoxy)pyridine