5-Cyano-3-fluoro-2-nitro-4-(trifluoromethoxy)pyridine
3-Cyano-5-fluoro-4-nitro-2-(trifluoromethoxy)pyridine
Methyl 2-cyano-5-(difluoromethyl)-3-(trifluoromethoxy)pyridine-4-acetate
Methyl 2-cyano-3-(difluoromethyl)-5-(trifluoromethoxy)pyridine-6-acetate