Methyl 3-(bromomethyl)-4-fluoro-2-(trifluoromethoxy)pyridine-6-carboxylate
3-(Difluoromethyl)-6-hydroxy-2-nitro-4-(trifluoromethoxy)pyridine
5-(Difluoromethyl)-2-hydroxy-4-nitro-3-(trifluoromethoxy)pyridine
4-(Difluoromethyl)-5-hydroxy-2-nitro-3-(trifluoromethoxy)pyridine