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