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