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