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