2,6-Bis(2,3,4-trichlorophenyl)-4-(difluoromethoxy)pyridine
6-(Difluoromethoxy)-3-(perchlorophenyl)-2-(trifluoromethyl)pyridine
3-(Difluoromethoxy)-2-(perchlorophenyl)-6-(trifluoromethyl)pyridine
2-(Difluoromethoxy)-3-(perchlorophenyl)-6-(trifluoromethyl)pyridine