2-Amino-6-cyano-5-(trifluoromethoxy)pyridine-3-acetonitrile
5-Amino-2-cyano-3-(difluoromethyl)-4-(trifluoromethoxy)pyridine
4-Amino-3-cyano-6-(difluoromethyl)-2-(trifluoromethoxy)pyridine
4-Amino-3-cyano-5-(difluoromethyl)-2-(trifluoromethoxy)pyridine