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