Ethyl 3-(bromomethyl)-5-(difluoromethyl)-2-hydroxypyridine-6-carboxylate
4-(Difluoromethyl)-3-iodo-2-methylpyridine-6-acetonitrile
Ethyl 4-(difluoromethyl)-2-hydroxy-6-(trifluoromethyl)pyridine-3-acetate
3-(Difluoromethyl)-5-iodo-6-methylpyridine-2-acetonitrile