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