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