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