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