Methyl 6-bromo-4-hydroxy-3-(trifluoromethoxy)pyridine-2-carboxylate
Methyl 4-chloro-2-(difluoromethyl)-3-methoxypyridine-5-carboxylate
2-(Chloromethyl)-3-fluoro-4-iodo-6-(trifluoromethoxy)pyridine
Methyl 3-(difluoromethyl)-5-fluoro-4-nitropyridine-2-carboxylate