6-(Difluoromethoxy)-3-(perfluorophenyl)-2-(trifluoromethyl)pyridine
3-(Difluoromethoxy)-2-(perfluorophenyl)-6-(trifluoromethyl)pyridine
2-(Difluoromethoxy)-3-(perfluorophenyl)-6-(trifluoromethyl)pyridine
2-(Difluoromethoxy)-3-(perfluorophenyl)-5-(trifluoromethyl)pyridine