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