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