Methyl 6-amino-4-(difluoromethyl)-2-methoxypyridine-3-carboxylate
3-Fluoro-4-(trifluoromethoxy)pyridine-2-sulfonyl chloride
Methyl 3-(chloromethyl)-5-hydroxy-6-(trifluoromethoxy)pyridine-2-carboxylate
Ethyl 3-(difluoromethyl)-5-hydroxy-2-methylpyridine-6-carboxylate