Ethyl 3-(difluoromethyl)-4-nitro-6-(trifluoromethoxy)pyridine-2-acetate
2-(Bromomethyl)-4-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-5-carboxaldehyde
Ethyl 5-(difluoromethyl)-4-nitro-3-(trifluoromethoxy)pyridine-2-acetate
2-(Bromomethyl)-3-(trifluoromethoxy)-5-(trifluoromethyl)pyridine-6-carboxaldehyde