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