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