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