Methyl 2-bromo-4-(chloromethyl)-5-(difluoromethyl)pyridine-3-carboxylate
Methyl 2-bromo-4-(chloromethyl)-3-(difluoromethyl)pyridine-5-carboxylate
Methyl 2-bromo-3-(chloromethyl)-6-(difluoromethyl)pyridine-4-carboxylate
6-Bromo-2-(difluoromethyl)-4-methyl-3-nitropyridine