2-Amino-5-(aminomethyl)-4-(difluoromethyl)pyridine-3-carboxylic acid
2-Amino-3-(bromomethyl)-5-(difluoromethyl)pyridine-4-acetic acid
Ethyl 3-amino-2-(aminomethyl)-6-(difluoromethyl)pyridine-5-carboxylate
2-Amino-4-(difluoromethyl)-3-nitro-5-(trifluoromethyl)pyridine