Methyl 3-bromo-2-(difluoromethyl)-4-nitropyridine-6-carboxylate
Methyl 6-bromo-2-(difluoromethyl)-3-nitropyridine-4-carboxylate
5-(Aminomethyl)-2-bromo-3-(difluoromethyl)-4-methoxypyridine
Methyl 6-bromo-2-(difluoromethyl)-4-nitropyridine-3-carboxylate