Methyl 3-amino-2-bromo-4-(difluoromethyl)pyridine-6-carboxylate
6-Amino-2-(difluoromethyl)-3-fluoro-4-(trifluoromethyl)pyridine
Methyl 2-amino-6-bromo-5-(difluoromethyl)pyridine-3-carboxylate
Methyl 3-amino-6-bromo-2-(difluoromethyl)pyridine-4-carboxylate