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