Ethyl 4-amino-3-(difluoromethyl)-6-methylpyridine-2-carboxylate
2-Amino-3-(chloromethyl)-4-(difluoromethyl)-6-(trifluoromethyl)pyridine
Ethyl 4-amino-2-(difluoromethyl)-6-methylpyridine-3-carboxylate
Ethyl 5-amino-2-(bromomethyl)-3-(difluoromethyl)pyridine-6-acetate