2-Cyano-5-(difluoromethyl)-6-nitro-3-(trifluoromethyl)pyridine
2-Amino-6-(aminomethyl)-5-chloro-3-(difluoromethyl)pyridine
2-(Difluoromethyl)-4-nitro-3-(trifluoromethoxy)pyridine-6-carboxaldehyde
2-(Aminomethyl)-4-(difluoromethyl)-3-iodo-5-methoxypyridine