2-(Bromomethyl)-6-(difluoromethyl)-3-hydroxy-5-(trifluoromethoxy)pyridine
3-(Difluoromethyl)-5-iodo-4-nitro-2-(trifluoromethoxy)pyridine
6-(Bromomethyl)-3-(difluoromethyl)-2-hydroxy-4-(trifluoromethoxy)pyridine
5-(Difluoromethyl)-4-iodo-2-nitro-3-(trifluoromethoxy)pyridine