Methyl 4-bromo-6-(difluoromethyl)-2-fluoropyridine-3-carboxylate
Methyl 4-bromo-6-(difluoromethyl)-3-fluoropyridine-2-carboxylate
Methyl 4-bromo-2-(difluoromethyl)-3-fluoropyridine-6-carboxylate
Methyl 2-bromo-6-cyano-5-(difluoromethyl)pyridine-3-acetate