3-Amino-4-(difluoromethyl)-2-(trifluoromethoxy)pyridine-5-acetonitrile
5-Amino-2-(chloromethyl)-4-(difluoromethyl)-3-(trifluoromethoxy)pyridine
3-Amino-4-(difluoromethyl)-2-hydroxy-5-(trifluoromethoxy)pyridine
4-Amino-3-(chloromethyl)-5-(difluoromethyl)-2-(trifluoromethoxy)pyridine