Ethyl 6-methoxy-3-nitro-2-(trifluoromethoxy)pyridine-4-carboxylate
Methyl 2-(fluoromethyl)-3-methoxy-5-(trifluoromethoxy)pyridine-4-acetate
Ethyl 2-methoxy-3-nitro-5-(trifluoromethoxy)pyridine-4-acetate
Ethyl 2-methoxy-4-nitro-6-(trifluoromethoxy)pyridine-3-carboxylate