Ethyl 3-bromo-2-(difluoromethyl)-4-nitropyridine-6-carboxylate
Ethyl 6-bromo-2-(difluoromethyl)-3-nitropyridine-4-carboxylate
Ethyl 6-bromo-2-(difluoromethyl)-4-nitropyridine-3-carboxylate
3-(Aminomethyl)-2-bromo-5-(difluoromethyl)-4-(trifluoromethyl)pyridine