Ethyl 3-amino-2-(difluoromethyl)-4-(trifluoromethyl)pyridine-6-acetate
Methyl 4-bromo-2-chloro-5-(difluoromethyl)pyridine-3-carboxylate
Ethyl 2-amino-6-(difluoromethyl)-5-(trifluoromethyl)pyridine-3-acetate
3-Bromo-5-chloro-2-(difluoromethyl)-4-fluoropyridine