Ethyl 5-(bromomethyl)-3-(difluoromethyl)-2-(trifluoromethoxy)pyridine-4-carboxylate
Ethyl 3-(bromomethyl)-5-(difluoromethyl)-4-(trifluoromethoxy)pyridine-2-carboxylate
Methyl 6-(difluoromethyl)-3-nitro-4-(trifluoromethoxy)pyridine-2-acetate
Methyl 2-(difluoromethyl)-5-nitro-3-(trifluoromethoxy)pyridine-4-acetate