Ethyl 3-(difluoromethyl)-2-hydroxy-5-(trifluoromethyl)pyridine-4-carboxylate
3-(Bromomethyl)-6-(difluoromethyl)-2-iodo-5-methylpyridine
Ethyl 2-(difluoromethyl)-6-hydroxy-4-(trifluoromethyl)pyridine-3-carboxylate
3-(Difluoromethyl)-5-iodo-2-methyl-6-(trifluoromethyl)pyridine