Ethyl 2-bromo-3-(difluoromethyl)-6-nitropyridine-5-acetate
3-(Aminomethyl)-4-bromo-2-(difluoromethyl)pyridine-5-carboxylic acid
Ethyl 2-bromo-3-(difluoromethyl)-4-nitropyridine-6-acetate
3-(Aminomethyl)-2-bromo-6-(difluoromethyl)pyridine-4-carboxylic acid