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