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