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