Methyl 2-(bromomethyl)-6-cyano-5-(difluoromethyl)pyridine-3-carboxylate
Methyl 6-(bromomethyl)-3-cyano-2-(difluoromethyl)pyridine-4-carboxylate
2-(Aminomethyl)-4-cyano-3-(difluoromethyl)-5-methylpyridine
3-(Chloromethyl)-6-cyano-4-(difluoromethyl)-2-methylpyridine