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