Ethyl 2-(bromomethyl)-4-(trifluoromethoxy)-5-(trifluoromethyl)pyridine-3-acetate
3-(Difluoromethyl)-4-nitro-2-(trifluoromethoxy)pyridine-6-carboxaldehyde
4-(Difluoromethyl)-2-nitro-5-(trifluoromethoxy)pyridine-3-carboxaldehyde
3-(Difluoromethyl)-2-nitro-6-(trifluoromethoxy)pyridine-4-carboxaldehyde