Ethyl 2-cyano-3-fluoro-4-(trifluoromethoxy)pyridine-6-carboxylate
Methyl 3-cyano-6-fluoro-2-(trifluoromethoxy)pyridine-5-carboxylate
Methyl 5-cyano-2-fluoro-3-(trifluoromethoxy)pyridine-6-carboxylate
6-Bromo-2-(difluoromethyl)-3-(trifluoromethoxy)pyridine-4-carboxylic acid