Methyl 2-(difluoromethyl)-4-hydroxy-3-iodopyridine-6-acetate
Ethyl 2-cyano-5-(difluoromethyl)-4-methoxypyridine-3-carboxylate
Ethyl 4-fluoro-5-hydroxy-2-(trifluoromethoxy)pyridine-3-carboxylate
2-Bromo-6-(difluoromethyl)-5-hydroxypyridine-3-acetonitrile