Methyl 3-cyano-4-(difluoromethyl)-6-(trifluoromethoxy)pyridine-2-carboxylate
Methyl 2-cyano-6-(difluoromethyl)-5-(trifluoromethoxy)pyridine-3-carboxylate
Methyl 6-cyano-3-(difluoromethyl)-2-(trifluoromethoxy)pyridine-4-carboxylate
6-Fluoro-4-hydroxy-2-methyl-3-(trifluoromethoxy)pyridine