Methyl 6-cyano-2-(difluoromethyl)-4-(trifluoromethoxy)pyridine-3-acetate
Methyl 2-cyano-6-(difluoromethyl)-3-(trifluoromethoxy)pyridine-4-acetate
Methyl 3-fluoro-5-iodo-2-(trifluoromethoxy)pyridine-4-carboxylate
Methyl 5-fluoro-4-iodo-3-(trifluoromethoxy)pyridine-2-carboxylate