Ethyl 4-(chloromethyl)-5-hydroxy-2-(trifluoromethoxy)pyridine-3-carboxylate
Methyl 4-(difluoromethyl)-2-fluoro-6-hydroxypyridine-3-carboxylate
Ethyl 2-bromo-4-methoxy-3-(trifluoromethoxy)pyridine-5-carboxylate
Ethyl 2-(difluoromethyl)-3-nitro-4-(trifluoromethoxy)pyridine-6-carboxylate