Ethyl 5-(difluoromethyl)-4-fluoro-3-(trifluoromethoxy)pyridine-2-acetate
Methyl 2-fluoro-4-(fluoromethyl)-3-(trifluoromethoxy)pyridine-6-acetate
Ethyl 3-(difluoromethyl)-4-fluoro-2-(trifluoromethoxy)pyridine-5-acetate
Methyl 2-fluoro-3-(fluoromethyl)-4-(trifluoromethoxy)pyridine-6-acetate