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