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