Methyl 2-cyano-5-(difluoromethyl)-3-(trifluoromethoxy)pyridine-4-carboxylate
Ethyl 2-cyano-3-(trifluoromethoxy)-5-(trifluoromethyl)pyridine-6-carboxylate
3-Cyano-4-(difluoromethyl)-2-(trifluoromethoxy)pyridine-5-acetic acid
Methyl 4-fluoro-3-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-5-acetate