Ethyl 3-(difluoromethyl)-5-hydroxy-4-methoxypyridine-2-carboxylate
2-(Difluoromethyl)-5-methoxy-3-methylpyridine-4-carbonyl chloride
3-Methoxy-5-nitro-2-(trifluoromethoxy)pyridine-6-carbonyl chloride
Ethyl 4-cyano-6-(fluoromethyl)-2-(trifluoromethoxy)pyridine-3-acetate