4-(Difluoromethyl)-2-(trifluoromethoxy)-5-(trifluoromethyl)pyridine
5-(Difluoromethyl)-3-(trifluoromethoxy)-2-(trifluoromethyl)pyridine
3-(Difluoromethyl)-5-(trifluoromethoxy)-2-(trifluoromethyl)pyridine
3-(Difluoromethyl)-4-(trifluoromethoxy)-5-(trifluoromethyl)pyridine