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