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