5-Bromo-4-(difluoromethyl)-3-nitropyridine-2-carboxaldehyde
2-(Aminomethyl)-4-bromo-5-(difluoromethyl)-3-(trifluoromethyl)pyridine
3-Bromo-4-(difluoromethyl)-2-nitropyridine-6-carboxaldehyde
3-Bromo-2-(difluoromethyl)-6-nitropyridine-5-carboxaldehyde