Ethyl 3-(aminomethyl)-6-bromo-4-(difluoromethyl)pyridine-2-acetate
Ethyl 5-(aminomethyl)-2-bromo-3-(difluoromethyl)pyridine-6-acetate
2-Bromo-6-(difluoromethyl)-4-methyl-3-nitropyridine
Ethyl 4-(aminomethyl)-5-bromo-2-(difluoromethyl)pyridine-3-acetate