5-Chloro-2-cyano-4-nitro-3-(trifluoromethoxy)pyridine
Methyl 4-bromo-3-(difluoromethyl)-2-(trifluoromethoxy)pyridine-6-carboxylate
4-Chloro-5-cyano-2-nitro-3-(trifluoromethoxy)pyridine
Methyl 4-bromo-2-(difluoromethyl)-6-(trifluoromethoxy)pyridine-3-carboxylate