Methyl 2-amino-3-(aminomethyl)-5-(difluoromethyl)pyridine-4-carboxylate
4-Amino-3-(bromomethyl)-6-(difluoromethyl)-2-methylpyridine
3-Amino-6-(aminomethyl)-2-(difluoromethyl)pyridine-4-carboxylic acid
4-Amino-3-(bromomethyl)-2-(difluoromethyl)-6-methylpyridine