5-Amino-3-(aminomethyl)-4-(difluoromethyl)pyridine-2-carboxylic acid
6-Amino-2-(chloromethyl)-4-(difluoromethyl)pyridine-3-carboxaldehyde
4-Amino-6-(aminomethyl)-3-(difluoromethyl)-2-(trifluoromethyl)pyridine
5-Amino-4-(aminomethyl)-3-(difluoromethyl)pyridine-2-carboxylic acid