Ethyl 5-amino-2-(difluoromethyl)-3-(trifluoromethyl)pyridine-4-carboxylate
3-Amino-4-(difluoromethyl)-2-(trifluoromethyl)pyridine-6-carboxylic acid
Ethyl 2-amino-3-(difluoromethyl)-4-(trifluoromethyl)pyridine-5-acetate
Ethyl 4-amino-5-(difluoromethyl)-3-(trifluoromethyl)pyridine-2-carboxylate