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