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