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