5-Amino-2-(aminomethyl)-4-(difluoromethyl)pyridine-3-acetic acid
Methyl 2-amino-3-(aminomethyl)-5-(difluoromethyl)pyridine-6-acetate
Ethyl 6-amino-2-(aminomethyl)-3-(difluoromethyl)pyridine-4-carboxylate
Ethyl 2-amino-6-(aminomethyl)-4-(difluoromethyl)pyridine-3-carboxylate