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