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