Methyl 2-(bromomethyl)-5-(difluoromethyl)-6-hydroxypyridine-3-carboxylate
3-(Bromomethyl)-2-fluoro-5-(trifluoromethoxy)pyridine-6-methanol
4-(Chloromethyl)-2-(difluoromethyl)-6-hydroxy-3-methylpyridine
2-(Difluoromethyl)-6-methoxy-4-(trifluoromethyl)pyridine