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