Ethyl 6-amino-4-(difluoromethyl)-3-(trifluoromethyl)pyridine-2-carboxylate
Methyl 5-amino-2-(difluoromethyl)-3-(trifluoromethyl)pyridine-4-carboxylate
Methyl 4-amino-5-(difluoromethyl)-3-(trifluoromethyl)pyridine-2-carboxylate
2-Bromo-3-chloro-5-(difluoromethyl)-4-methoxypyridine