Methyl 4-cyano-5-(difluoromethyl)-3-hydroxypyridine-2-carboxylate
Ethyl 6-cyano-3-(difluoromethyl)-2-hydroxypyridine-4-carboxylate
5-(Chloromethyl)-2-cyano-3-(trifluoromethoxy)-4-(trifluoromethyl)pyridine
3-(Bromomethyl)-4-(difluoromethyl)-6-iodo-2-methoxypyridine