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