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