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