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